| Main Entry: | harmful |
| Part of Speech: | adjective |
| Definition: | injurious, hurtful |
Synonyms: |
adverse, bad, baleful, baneful, calamitous, cataclysmic, catastrophic, consumptive, corroding, corrupting, crippling, damaging, deleterious, destructive, detrimental, dire, disadvantageous, disastrous, evil, harassing, incendiary, inimical, internecine, malefic, malicious, malignant, menacing, mischievous, murderous, nocuous, noxious, painful, pernicious, pestiferous, pestilential, risky, ruinous, sinful, sinister, subversive, toxic, undermining, unhealthy, unsafe, unwholesome, virulent |
| Main Entry: | baleful |
| Part of Speech: | adjective |
| Definition: | menacing |
Synonyms: |
calamitous, deadly, dire, evil, foreboding, harmful, hurtful, injurious, malevolent, malignant, noxious, ominous, pernicious, ruinous, sinister, threatening, venomous, vindictive, woeful |
| Notes: | something is baleful that intends or portends harm or injury; something is baneful that produces harm or injury - thus, a glance may be baleful, an herb or poison baneful |
Antonyms: |
advantageous, auspicious, favorable, good, helping, promising |
| Main Entry: | baneful |
| Part of Speech: | adjective |
| Definition: | ruinous, injurious |
Synonyms: |
baleful, calamitous, deadly, deleterious, destructive, disastrous, evil, fatal, harmful, hurtful, malefic, noxious, pernicious, pestilent, pestilential, poisonous, venomous, wicked |
Antonyms: |
advantageous, beneficial, beneficient, fortunate, helpful, lucky |
| Main Entry: | calamitous |
| Part of Speech: | adjective |
| Definition: | disastrous; tragic |
Synonyms: |
adverse, afflictive, blighting, cataclysmic, catastrophic, deadly, deplorable, devastating, dire, fatal, grievous, harmful, heartbreaking, lamentable, messy, pernicious, regrettable, ruinous, unfavorable, unfortunate, woeful |
Antonyms: |
blessed, comforting, favorable, fortunate, happy, joyous, wonderful |
| Main Entry: | damaging |
| Part of Speech: | adjective |
| Definition: | hurtful to reputation |
Synonyms: |
bad, deleterious, detrimental, disadvantageous, evil, harmful, injurious, mischievous, nocent, nocuous, prejudicial, ruinous |
Antonyms: |
beneficial, favorable, helpful |
| Main Entry: | deadly |
| Part of Speech: | adjective |
| Definition: | causing end of life |
Synonyms: |
baleful, baneful, bloodthirsty, bloody, cannibalistic, carcinogenic, cruel, dangerous, death-dealing, deathly, deleterious, destroying, destructive, fatal, grim, harmful, homicidal, injurious, internecine, killing, lethal, malignant, mortal, mortiferous, murderous, noxious, pernicious, pestiferous, pestilent, pestilential, poisonous, ruthless, savage, slaying, suicidal, toxic, unrelenting, venomous, violent, virulent |
Antonyms: |
animating, energizing, harmless, healthful, healthy, invigorating, wholesome |
| Main Entry: | destructive |
| Part of Speech: | adjective |
| Definition: | injurious, devastating |
Synonyms: |
annihilative, baleful, baneful, calamitous, cancerous, cataclysmic, catastrophic, consumptive, cutthroat, damaging, deadly, deleterious, detrimental, dire, disastrous, eradicative, evil, extirpative, fatal, fell, harmful, hurtful, internecine, lethal, lethiferous, mortal, noisome, noxious, pernicious, pestiferous, pestilential, ruinous, slaughterous, suicidal, toxic, venomous, wrackful, wreckful |
Antonyms: |
aiding, assisting, building, creative, helpful, productive |
| Main Entry: | detrimental |
| Part of Speech: | adjective |
| Definition: | damaging, disadvantageous |
Synonyms: |
adverse, bad, baleful, deleterious, destructive, disturbing, evil, harmful, hurtful, ill, inimical, injurious, mischievous, negative, nocuous, pernicious, prejudicial, unfavorable |
Antonyms: |
advantageous, assisting, beneficial, helpful, profitable |
| Main Entry: | disadvantageous |
| Part of Speech: | adjective |
| Definition: | detrimental, inconvenient |
Synonyms: |
adverse, contrary, damaging, debit-side, deleterious, depreciative, depreciatory, derogatory, detracting, disparaging, downside, dyslogistic, harmful, hurtful, ill-timed, inexpedient, injurious, inopportune, objectionable, on the debit side, pejorative, prejudicial, slighting, uncomplimentary, unfavorable, unprofitable |
Antonyms: |
advantageous, convenient, helpful, well-timed |
| Main Entry: | disastrous |
| Part of Speech: | adjective |
| Definition: | detrimental, devastating |
Synonyms: |
adverse, calamitous, cataclysmal, cataclysmic, catastrophic, destructive, dire, dreadful, fatal, fateful, hapless, harmful, ill-fated, ill-starred, luckless, ruinous, terrible, tragic, unfavorable, unfortunate, unlucky, unpropitious, untoward |
Antonyms: |
blessed, fortunate, lucky, miraculous, prosperous, successful, triumphant, winning, wondrous |