definition of
severe

[1] #1 severe s. [hard, knockout] very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow". wn

[2] #2 severe s. [spartan] unsparing and uncompromising in discipline or judgment; "a parent severe to the pitch of hostility"- H.G.Wells; "a hefty six-footer with a rather severe mien"; "a strict disciplinarian"; "a Spartan upbringing". wn

[3] #3 severe s. [dangerous, grave, grievous, serious, life-threatening] causing fear or anxiety by threatening great harm; "a dangerous operation"; "a grave situation"; "a grave illness"; "grievous bodily harm"; "a serious wound"; "a serious turn of events"; "a severe case of pneumonia"; "a life-threatening disease". wn

[4] #4 severe s. very bad in degree or extent; "a severe worldwide depression"; "the house suffered severe damage". wn