| Main Entry: | deleterious |
| Part of Speech: | adjective |
| Definition: | harmful, damaging |
Synonyms: |
bad, destroying, destructive, detrimental, hurtful, injurious, mischievous, nocent, nocuous, pernicious, prejudicial, prejudicious, ruining, ruinous |
Antonyms: |
aiding, assisting, helpful |
| Main Entry: | bad |
| Part of Speech: | adjective |
| Definition: | harmful |
Synonyms: |
damaging, dangerous, deleterious, detrimental, hurtful, injurious, ruinous, unhealthy |
| Notes: | badly is an adverb to describe an activity; bad is an adjective to describe a condition or state |
Antonyms: |
advantageous, beneficial, benevolent, good, honest, profitable, virtuous |
| 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: | corrupt |
| Part of Speech: | adjective |
| Definition: | debased, vicious |
Synonyms: |
abandoned, abased, baneful, boorish, degenerate, degraded, deleterious, depraved, dishonored, dissolute, evil, flagitious, infamous, loose, low, miscreant, monstrous, nefarious, perverse, profligate, rotten, villainous |
Antonyms: |
clean, decent, helpful, high, kind, noble, sound, wholesome |
| Main Entry: | costly |
| Part of Speech: | adjective |
| Definition: | harmful, damaging |
Synonyms: |
catastrophic, deleterious, disastrous, loss-making, ruinous, sacrificial |
Antonyms: |
aiding, helpful |
| 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: | destructive |
| Part of Speech: | adjective |
| Definition: | hurtful, disparaging |
Synonyms: |
abrasive, adverse, antagonistic, cankerous, caustic, contrary, corrosive, deleterious, derogatory, detrimental, discouraging, discrediting, erosive, hostile, injurious, invalidating, negative, offensive, opposed, troublesome, undermining, vicious |
Antonyms: |
encouraging, hopeful, positive |
| 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 |