| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | devilish, wicked |
| Synonyms: | arch, artful, bad, bothersome, damaging, dangerous, deleterious, destructive, detrimental, dickens, evil, exasperating, foxy*, frolicsome, harmful, hazardous, holy terror, hurtful, ill, ill-behaved, impish, injurious, insidious, irksome, malicious, malignant, misbehaving, naughty, nocuous, perilous, pernicious, playful, precarious, puckish, rascal, rascally, risky, rude, sinful, sly, spiteful, sportive, teasing, tricky, troublesome, vexatious, vexing, vicious, wayward |
| Antonyms: | behaved, good, nice, obedient |
| 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: | 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: | 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: | errant |
| Part of Speech: | adjective |
| Definition: | wrong; deviant |
| Synonyms: | aberrant, deviating, devious, drifting, errable, erratic, erring, fallible, heretic, meandering, misbehaving, mischievous, miscreant, naughty, off straight and narrow, offending, rambling, ranging, roaming, roving, shifting, sinning, stray, straying, unorthodox, unreliable, wandering, wayward |
| Notes: | an errand is a short trip that is taken for a specific purpose; arrant means thoroughgoing - downright - out-and-out - extreme - notorious; errant means wandering or roving especially in search of adventure - deviating or straying from an appointed course - straying from the proper standards - moving aimlessly or irregularly |
| Antonyms: | correct, righteous |
| Main Entry: | frolicsome |
| Part of Speech: | adjective |
| Definition: | playful |
| Synonyms: | antic, coltish, frisky, fun, gamesome, gay, gleeful, happy, impish, jocular, jovial, kittenish, lively, merry, mischievous, roguish, rollicking, sportive, sprightly |
| Antonyms: | serious, staid, stiff |
| 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: | hurtful |
| Part of Speech: | adjective |
| Definition: | injurious, cruel |
| Synonyms: | aching, afflictive, bad, cutting, damaging, dangerous, deadly, deleterious, destructive, detrimental, disadvantageous, distressing, evil, harmful, hurting, malicious, mean, mischievous, nasty, nocuous, noxious, ominous, pernicious, poisonous, prejudicial, spiteful, unkind, upsetting, wounding |
| Antonyms: | aiding, assisting, harmless, helpful, helping, kind, nice, relieving |
| Main Entry: | injurious |
| Part of Speech: | adjective |
| Definition: | hurtful |
| Synonyms: | abusive, adverse, bad, baneful, corrupting, damaging, dangerous, deadly, deleterious, destructive, detrimental, disadvantageous, evil, harmful, iniquitous, insulting, libeling, mischievous, nocent, nocuous, noxious, opprobrious, pernicious, poisonous, prejudicial, ruinous, slanderous, unconducive, unhealthy, unjust, wrongful |
| Antonyms: | aiding, assisting, beneficial, constructive, curing, fixing, good, healing, helpful, mending, nice |