adj. lacking self-confidence or assurance; "an insecure person lacking mental stability"

adj. not firm or firmly fixed; likely to fail or give way; "the hinge is insecure"

adj. lacking in security or safety; "his fortune was increasingly insecure"; "an insecure future"

adj. not safe from attack

adj. not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises"

adj. fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"

adj. detrimental to physical or moral well-being; "unwholesome food"; "unwholesome habits like smoking"

adj. harmful to living things; "deleterious chemical additives"

adj. (sometimes followed by `to') causing harm or injury; "damaging to career and reputation"; "the reporter's coverage resulted in prejudicial publicity for the defendant"

adj. having undesirable or negative qualities; "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice"

adj. capable of harming; "bad habits"; "bad air"; "smoking is bad for you"

adj. exceedingly harmful

adj. working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison"

adj. having a defect; "I returned the appliance because it was defective"

adj. as bad as can be; characterized by human misery; "AIDS is one of the dystopian harbingers of the global villages"- Susan Sontag

adj. having momentous consequences; of decisive importance; "that fateful meeting of the U.N. when...it declared war on North Korea"- Saturday Rev; "the fatal day of the election finally arrived"

adj. causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness"

adj. (unplayful)

adj. causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

adj. containing errors or alterations; "a corrupt text"; "spoke a corrupted version of the language"

adj. deliberately violating accepted principles of right and wrong

adj. morally bad or wrong; "evil purposes"; "an evil influence"; "evil deeds"

adj. involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions"

adj. lacking protection or defense

adj. susceptible to attack; "a vulnerable bridge"

adj. not defended or capable of being defended; "an open city"; "open to attack"

adj. vulnerable to danger especially of discredit or suspicion; "she found herself in a compromising situation"

adj. lacking protection or support; "a defenseless child"

adj. (of flora or fauna) in imminent danger of extinction; "an endangered species"

adj. capable of being penetrated; "penetrable defenses"

adj. (of flora or fauna) likely in the near future to become endangered; "the spotted owl is a threatened species, not yet an endangered one"

adj. subjected to enemy attack or censure; "an official under fire for mismanagement"

adj. lacking protection or a guard; "an unguarded gate"; "his unguarded queen was open to attack"

adj. not financially safe or secure; "a bad investment"; "high risk investments"; "anything that promises to pay too much can't help being risky"; "speculative business enterprises"

adj. damaged by decay; hence unsound and useless; "rotten floor boards"; "rotted beams"; "a decayed foundation"

adj. outside the bounds of legitimate or ethical business practices; "wildcat currency issued by irresponsible banks"; "wildcat stock speculation"; "a wildcat airline"; "wildcat life insurance schemes"

adj. free from fear or doubt; easy in mind; "secure himself, he went out of his way to help others"

adj. not likely to fail or give way; "the lock was secure"; "a secure foundation"; "a secure hold on her wrist"

adj. free from danger or risk; "secure from harm"; "his fortune was secure"; "made a secure place for himself in his field"

adj. characterized by certainty or security; "a tiny but assured income"; "we can never have completely assured lives"