Pathologyhaving ill health; not well:The sickest patients can't be moved from the hospital.
Pathology inclined to or ready to vomit:[be + ~]Help him, he's going to be sick all over the carpet.
deeply feeling some distressing emotion:[be + ~]was sick at heart.
annoyed with, disgusted by, or tired of:[be + ~ + (and tired) of + object]She's sick and tired of your complaints.
Psychiatrymentally, morally, or emotionally corrupt:These criminals are sick.
cruel; sadistic:sick jokes.
perverted; twisted:You and your sick mind!
of or relating to sickness:[before a noun]sick benefits.
n.[plural; used with a plural verb]
the sick, sick people thought of as a group:The sick need emotional and physical care.
sick is an adjective, sickly and sickening are adjectives, sickness is a noun, sicken is a verb:He's very sick and can't come to work. The starving child looks so sickly. The horror movie was sickening. He has a sickness we haven't diagnosed yet. That horror movie sickened me.
-sick is used to form adjectives with the meanings "sick or ill of or from (the noun of the root)'':car + -sick → carsick (= sick from traveling in a car);air + -sick → airsick (= sick from flying in a plane).
sic1or sick/sɪk/USA pronunciationv.,sicked or sicced (sikt), sick•ing or sic•cing.
to attack (used esp. in commanding a dog):[~ + object]Sic 'em, Bruno!
to urge or order (a person or animal) to attack:[~ + object + on + object]He sicced his gang on the local store owners.
Foreign Terms(used within brackets to show that a word or phrase has been written intentionally or has been quoted just as it was in the original, even though it looks odd or mistaken) like this; so:The poet signed his name as e. e. cummings [sic]. The sign read "Good English is speaking [sic] here.''
sic1(sik),USA pronunciationv.t.,sicked or sicced(sikt),USA pronunciationsick•ing or sic•cing.
to attack (used esp. in commanding a dog):Sic 'em!
to incite to attack (usually fol. by on).
variant of seek 1835–45
sic2(sik),USA pronunciationadj.[Chiefly Scot.]
1325–75; Middle English (north and Scots); see such
sic(sēk; Eng. sik),USA pronunciationadv.[Latin.]
Foreign Termsso; thus: usually written parenthetically to denote that a word, phrase, passage, etc., that may appear strange or incorrect has been written intentionally or has been quoted verbatim:He signed his name as e. e. cummings(sic).
Economics, GovernmentStandard Industrial Classification: a system used by the federal government to classify business activities for analytical and reporting purposes.