| Main Entry: | dangerous |
| Part of Speech: | adjective |
| Definition: | hazardous, troubling |
Synonyms: |
alarming, bad, breakneck, chancy, critical, dangersome, deadly, delicate, dynamite, exposed, fatal, formidable, hairy*, heavy*, hot*, impending, impregnable, insecure, jeopardous, loaded, malignant, menacing, mortal, nasty, on collision course, parlous, perilous, portentous, precarious, pressing, queasy, risky, serious, serpentine, shaky, speculative, terrible, thorny, threatening, ticklish, touch-and-go, touchy, treacherous, ugly*, unhealthy, unsafe, unstable, urgent, viperous, vulnerable, wicked |
Antonyms: |
careful, guarded, safe, secure, unhazardous, untroubled |
| Main Entry: | acute |
| Part of Speech: | adjective |
| Definition: | very important |
Synonyms: |
afflictive, critical, crucial, dangerous, decisive, desperate, dire, essential, grave, serious, severe, sudden, urgent, vital |
| Notes: | acute is used for a sudden onset and short duration; chronic is for conditions that are slow to develop and of long duration acute is an angle of less than 90 degrees; obtuse is one of more than 90 degrees chronic is contrasted with acute as chronic pain persists over a longer period of time than acute pain and is resistant to most medical treatments |
Antonyms: |
not serious, unimportant |
| Main Entry: | adventurous |
| Part of Speech: | adjective |
| Definition: | daring, risk-taking |
Synonyms: |
adventuresome, audacious, bold, brave, courageous, dangerous, daredevil, enterprising, foolhardy, hazardous, headstrong, intrepid, rash, reckless, risky, temerarious, venturesome, venturous |
Antonyms: |
careful, cautious, prudent, unadventurous |
| Main Entry: | awkward |
| Part of Speech: | adjective |
| Definition: | difficult to handle |
Synonyms: |
annoying, bulky, chancy, cramped, cumbersome, dangerous, disagreeable, discommodious, hard to use, hazardous, incommodious, inconvenient, perilous, risky, troublesome, uncomfortable, unhandy, unmanageable, unwieldy |
Antonyms: |
convenient, easy, straightforward |
| Main Entry: | bad |
| Part of Speech: | adjective |
| Definition: | harmful |
Synonyms: |
damaging, dangerous, deleterious, detrimental, hurtful, injurious, ruinous, unhealthy |
Antonyms: |
advantageous, beneficial, benevolent, good, honest, profitable, virtuous |
| Main Entry: | catching |
| Part of Speech: | adjective |
| Definition: | contagious (disease) |
Synonyms: |
communicable, dangerous, endemic, epidemic, epizootic, infectious, infective, miasmatic, pandemic, pestiferous, pestilential, taking, transferable, transmittable |
Antonyms: |
uncontagious |
| Main Entry: | critical |
| Part of Speech: | adjective |
| Definition: | urgently important |
Synonyms: |
acute, all-important, climacteric, conclusive, consequential, crucial, dangerous, deciding, decisive, desperate, determinative, dire, exceptive, grave, hairy*, hazardous, high-priority, integral, momentous, perilous, pivotal, precarious, pressing, risky, serious, significant, strategic, urgent, vital, weighty |
Antonyms: |
trivial, uncritical, unimportant |
| 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: | desperate |
| Part of Speech: | adjective |
| Definition: | reckless, outrageous |
Synonyms: |
atrocious, audacious, bold, careless, dangerous, daring, death-defying, determined, devil-may-care, foolhardy, frantic, frenzied, furious, hasty, hazardous, headlong, headstrong, heinous, impetuous, incautious, madcap, monstrous, precipitate, rash, risky, scandalous, shocking, venturesome, violent, wild |
Antonyms: |
confident, content, satisfied, secure, unworried |
| Main Entry: | dicey |
| Part of Speech: | adjective |
| Definition: | risky |
Synonyms: |
capricious, chancy, dangerous, difficult, erratic, fluctuant, iffy, incalculable, ticklish, tricky, uncertain, unpredictable, whimsical |
Antonyms: |
certain, safe, sure |