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"
a venture undertaken without regard to possible loss or injury; "he saw the rewards but not the risks of crime"; "there was a danger he would do the wrong thing"
the probability of being exposed to an infectious agent
the probability of becoming infected given that exposure to an infectious agent has occurred
expose to a chance of loss or damage; "We risked losing a lot of money in this venture"; "Why risk your life?"; "She laid her job on the line when she told the boss that he was wrong"
wishing or appearing to wish evil to others; arising from intense ill will or hatred; "a gossipy malevolent old woman"; "failure made him malevolent toward those who were successful"
presaging ill fortune; "ill omens"; "ill predictions"; "my words with inauspicious thunderings shook heaven"- P.B.Shelley; "a dead and ominous silence prevailed"; "a by-election at a time highly unpropitious for the Government"
distressing; "ill manners"; "of ill repute"
resulting in suffering or adversity; "ill effects"; "it's an ill wind that blows no good"
indicating hostility or enmity; "you certainly did me an ill turn"; "ill feelings"; "ill will"
affected by an impairment of normal physical or mental function; "ill from the monotony of his suffering"
(`ill' is often used as a combining form) in a poor or improper or unsatisfactory manner; not well; "he was ill prepared"; "it ill befits a man to betray old friends"; "the car runs badly"; "he performed badly on the exam"; "the team played poorly"; "ill-fitting clothes"; "an ill-conceived plan"
with difficulty or inconvenience; scarcely or hardly; "we can ill afford to buy a new car just now"
unfavorably or with disapproval; "tried not to speak ill of the dead"; "thought badly of him for his lack of concern"