adj. likely to spread and cause an epidemic disease; "a pestilential malignancy in the air"- Jonathan Swift; "plaguey fevers"

adj. exceedingly harmful

adj. causing irritation or annoyance; "tapping an annoying rhythm on his glass with his fork"; "aircraft noise is particularly bothersome near the airport"; "found it galling to have to ask permission"; "an irritating delay"; "nettlesome paperwork"; "a pesky mosquito"; "swarms of pestering gnats"; "a plaguey newfangled safety catch"; "a teasing and persistent thought annoyed him"; "a vexatious child"; "it is vexing to have to admit you are wrong"

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

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

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. of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection"

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. contrary to your interests or welfare; "adverse circumstances"; "made a place for themselves under the most untoward conditions"

adj. indicating opposition or resistance

adj. characterized by antagonism or antipathy; "slaves antagonistic to their masters"; "antipathetic factions within the party"

adj. having the qualities or effects of a poison

adj. making worse

adj. harsh; "sharp criticism"; "a sharp-worded exchange"; "a tart remark"

adj. requiring or showing effort; "heavy breathing"; "the subject made for labored reading"

adj. causing vexation or worry: "trying times"; "serious problems"

adj. causing disapproval or protest; "a vulgar and objectionable person"

adj. hard to manage; inclined to make trouble: "a difficult child"

adj. characterized by toilsome effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"

adj. extremely annoying or displeasing; "his cavelier curtness of manner was exasperating"; "I've had an exasperating day"; "her infuriating indifference"; "the ceaseless tumult of the jukebox was maddening"

adj. so lacking in interest as to cause mental weariness; "a boring evening with uninteresting people"; "the deadening effect of some routine tasks"; "a dull play"; "his competent but dull performance"; "a ho-hum speaker who couldn't capture their attention"; "what an irksome task the writing of long letters is"- Edmund Burke; "tedious days on the train"; "the tiresome chirping of a cricket"- Mark Twain; "other people's dreams are dreadfully wearisome"

adj. not easily borne; wearing; "the burdensome task of preparing the income tax return"; "my duties weren't onerous; I only had to greet the guests"; "a taxing schedule"

adj. disagreeable to the senses, to the mind, or feelings ; "an unpleasant personality"; "unpleasant repercussions"; "unpleasant odors"

adj. causing distress or worry or anxiety; "distressing (or disturbing) news"; "lived in heroic if something distressful isolation"; "a disturbing amount of crime"; "a revelation that was most perturbing"; "a new and troubling thought"; "in a particularly worrisome predicament"; "a worrying situation"; "a worrying time"

adj. tending to repel; "The trappings of upper-class life are off-putting and sterile"- Elizabeth Hess

adj. not desirable; "undesirable impurities in steel"; "legislation excluding undesirable aliens"

adj. (of plants) epidemic among plants of a single kind especially over a wide area; "an epiphytotic blight of potatoes"; "epiphytotic conditions associated with a single-plant agriculture"

adj. (of animals) epidemic among animals of a single kind within a particular region; "an epizootic disease"

adj. epidemic over a wide geographical area; "a pandemic outbreak of malaria"

adj. harmful to the mind or morals; "corrupt judges and their corrupting influence"; "the vicious and degrading cult of violence"

adj. not pleasing in odor or taste

adj. extremely irritating to the nerves; "nerve-racking noise"; "the stressful days before a war"; "a trying day at the office"

adj. conforming to your own liking or feelings or nature; "Is the plan agreeable to you?"; "he's an agreeable fellow"; "My idea of an agreeable person...is a person who agrees with me"- Disraeli; "an agreeable manner"