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noxious deleterious evil bad injurious negative noisome detrimental abuse unhealthy inimical innocuous antisocial contagion black pollute pernicious mischievous poison ill unwholesome disservice poisonous pollution adverse conspiracy unharmful malign toxic nocent vermin contaminate prey expose pest detoxify insidious baleful plague nocuous mitigate addict detox taint pestilential wicked unfavorable enemy scathing pasteurize inoffensive disease pestilent septic malignant undesirable benign
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noise pollution invasion incur radioprotection prejudicial proscribe risk corrosive malevolent cure infestuous calumnious biological weapon retaliate antiseptic maleficent hurtful baneful accident mischief negatively purity exposure plot antigen virus talebearer calumny antidote perpetrate smite -iasis calumniate compunction antibiotic doctor innocent consumerism incite pollutant purify sinister culpable weed outrageous prejudice environmentally friendly impure proof infect invade lethal ungreen pestilence food poisoning containment disinfect decry worse attack unfriendly tumor nocebo ozone-friendly unfortunate malicious nasty pure conspire disinfectant whitefly sepsis disinfection septicemia potato beetle crib-biting unholy hard drug recrudesce tolerance tare screening pesticide biosecurity biodegradable plotter greentailing resistance catastrophic damage green evil-minded abatement reform quit infection infest monger substance slanderous mitigation epidemic deadly harmless socially responsible foe danger clean cancer brush connive radioactivity insulate fumes contrarious smash scatheful disagree nocive detoxification grievous dissipated catalytic converter antibody absorb friendly drug abuse menace goblin substance abuse heroin escape tamper venomous severe vice -ful the ozone layer purification microbe fiddle blow bioreactor biological warfare vicious retaliatory contra bonos mores intent fume scathful neutral bogus incursion backstabbing dissipation innocence biocompatible persecution censor combat harsh environmentally unfriendly unsalutary genotoxic socially responsible investment germ warfare bioterrorism fumigate aseptic hot-stove soft unbeneficial eco–friendly hex miasma adiaphorous unfiltered damn PCB rescue contain kind unhealthful rogue adversely sewage works antibiosis light disutility index ethical investment ecological conspirator respirator lymphocyte defamatory pathogenic demon empoison spare vindictive offensible eco-friendly attenuated inoculate betray biodegrade excrete bite disfavor do more harm than good cross-contamination side effect emergency war Trojan bait antioxidant phagocyte book burning conspiratorial decontaminate iniquity penal turn degrading trail effluvium damaging villain grave ladybug inflict discreditable compulsive be hell on teenful canard affect mitigating superoxide dismutase ozone layer microbicide untreated buffer maltreatment clear of ruinous wrong vulnerable step backward/forward wreak lethally mean the thin end of the wedge down the road/path to perdition protective leprosy cyst outbreak acid rain cyclohexylamine blindside be murder on sth damnosa hereditas badly sting do depollute rotgut tale bug collude pasteurization mimicry offset SPF mud commit neutralize peccadillo damp public enemy number one immunity screen out altruism stand up to off clearance insulation safety misfortune biothreat curb rife cacoethes persecute sign your own death warrant compromise fiddle with tolerate foul germicide insidiously imp defuse radioactive waste shelter dodge a/the bullet somniferous penicillin canker first-degree avert decompression watch yourself violent thuggery eradicate costly peddle biosecure do your worst corrective germ carrier cleanse peddler ridden retaliation manhandle bale out expurgatory dirty forbidding magic bullet alcoholized addicted bioweapon control dead hand virulent stand the lesser of two evils stamp sth out stab sb in the back to one's detriment to the detriment of unequal the brunt of blast threat upas prophylactic revenge thin virulence unjust counteract strong louse confederacy dehydration mess around with sth it won't hurt environment issue environmental spill monkey around with sth scarecrow responsibility sheltered planet–stricken impose slur rise above expose sb to sth stability bend the rules hit countervail clamp down on sth foment -ridden toxic waste Trojan horse carbon emissions arsenic measure big business bleach it couldn't/can't hurt aggression green ban implicate league seductive stalk antivirus environment-minded abuseful fumigator disserviceable octopus macrophage blast injury unlearn unloose blood poisoning crime neonicotinoid loose demonology -infested rid neutroceptor palliate it’s/that’s someone’s funeral antibacterial at risk bail out sanitize sniff libellous warp toxemia tolerant sour humus minimize cocktail black-on-black a wolf in sheep’s clothing all work and no play (makes Jack a dull boy) suck sb/sth in/suck sb/sth into sth obnoxious meddle scuzzball phagocytosis purge osteochondroma orgy reformed light pollution hatch a plot low-impact damage limitation decay toxaemia dodge firebreak ad injector botulism chemical warfare alcoholize unacceptable eco–hotel un-American countermeasure counterproductive fear in danger retention haemodialysis kick the habit probiotic foul one's (own) nest backstabber polyp slyly correction musical chairs off–gas cabal unclean lace radioprotector clutches clean-up clean–till conniving excise cushion break a habit electrosmog incriminate mudslinging green waste boomerang abstention agricultural entomology addiction ail affected acid-free dirty bomb discharge geohazard clean (sth) up purifier precautionary stave off perpetrator tell unleash responsible rid sb/sth of sth/sb ringleader maleficence stamp on sth sin tax treachery undercurrent time bomb environmental oppress water filter collusion compensate respond cybercrime air pollution repair botnet eye-safe crop spraying ethical fund biological control book-burner brain sucker hatred chemtrail filter tip institutionalized lymph node environmental activism sweeten thermal pollution class A (or B or C) drug malice precaution green fuel soft drug contraindication fume cupboard settle the score radioresistance to subject (someone or something) to discourage sewage plant strike disinsection bend the law/rules adder sly star chamber anti-vaxxer rash unleaded roguish spit Typhoid Mary institutionalization murder typhoid nonuser slug pellet dolphin-safe eco-tax ecotoxicology sewage treatment plant ride out sewage farm unchecked nuisance expurgate well-meant judo black magic scallywag deliberate err on the right side lymph chronic bioagent gas mask ablation sustainable procurement suntan lotion siren song (or call) polluter rat removal discharger bad seed reformation scrubber pain social responsibility bear safelight discouragement IgM retribution X-linked agammaglobulinaemia happen to allergen strike force emissions trading curiosity killed the cat abnormal invasive immunoglobulin betrayer despicable emetic biofuel haunt asocial half-life NOx Alkali Act VOC leach environmentally sensitive ecocide smog abnormality bottle up commensalism child lock antisocial personality disorder Dianetics like lemmings sheep dip avoidance behaviour bacteriocin battery guard pervert radon opportunistic infection radioprotective IgG hot spot radioactive blind-side melanin bend the truth poisoned chalice swear off sth vole weevil dioxin mefloquine radiosensitivity witch-hunt cognitive dissonance threaten logic bomb dip pasteurized eco-socialism neutrophil pep paper tiger lurk free-from payback vengeance abusive mask gas cloud environmental footprint autocidal premonition emission unit anti-noise green chemistry dross malfeasance imperil inspection design strontium allergy cyclamate brinkmanship recovering anabolic steroid frackademic tit for tat vaccine sustainable transport tagati serous play eco-fashion cap and trade environmental site assessment incubate priapism hormesis haze libel HDL soft landing do-gooder sober positive propanediol disoperation defeat device chalice liberty refugee bestiality brown tide skull and crossbones diphtheria chlorofluorocarbon IgA dysfunctional e-cigarette unreasonable impersonation benignant gas intimidate masturbate racist stimulant generalization misfeasance dependency excretion maggot diabolical galvanic nontoxic take/plead the Fifth domatium clot treacherous villainous toxin opium freedom of speech symbiosis injunction

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Words For "harmful"

As you've probably noticed, words for "harmful" are listed above. According to the algorithm that drives this word similarity engine, the top 5 related words for "harmful" are: noxious, deleterious, evil, bad, and injurious. There are 799 other words that are related to or similar to harmful listed above. Hopefully the generated list of words for "harmful" above suit your needs. If not, you might want to check out Related Words - another project of mine which uses a different technique (not though that it works best with single words, not phrases).

About Reverse Dictionary

The way Reverse Dictionary works is pretty simple. It simply looks through tonnes of dictionary definitions and grabs the ones that most closely match your search query. For example, if you type something like "longing for a time in the past", then the engine will return "nostalgia". The engine has indexed several million definitions so far, and at this stage it's starting to give consistently good results (though it may return weird results sometimes). It acts a lot like a thesaurus except that it allows you to search with a definition, rather than a single word. So in a sense, this tool is a "search engine for words", or a sentence to word converter.

I made this tool after working on Related Words which is a very similar tool, except it uses a bunch of algorithms and multiple databases to find similar words to a search query. That project is closer to a thesaurus in the sense that it returns synonyms for a word (or short phrase) query, but it also returns many broadly related words that aren't included in thesauri. So this project, Reverse Dictionary, is meant to go hand-in-hand with Related Words to act as a word-finding and brainstorming toolset. For those interested, I also developed Describing Words which helps you find adjectives and interesting descriptors for things (e.g. waves, sunsets, trees, etc.).

In case you didn't notice, you can click on words in the search results and you'll be presented with the definition of that word (if available). The definitions are sourced from the famous and open-source WordNet database, so a huge thanks to the many contributors for creating such an awesome free resource.

Special thanks to the contributors of the open-source code that was used in this project: Elastic Search, @HubSpot, WordNet, and @mongodb.

Please note that Reverse Dictionary uses third party scripts (such as Google Analytics and advertisements) which use cookies. To learn more, see the privacy policy.

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