A synonym for severe would be serious or grave.
I'm not sure if there is a word that specifies the severity of a cut, but another word for 'cut' is 'laceration'.
Yes, there are a couple of words for strict; rigorous, stern, disciplinary and demanding.
Rough, callous, or extreme all do equally well in most contexts.
Deliberate or contemplative
stringent, rough, stern, rigid
tremendous
mean
severe, extravagant, strong, extreme
Another word meaning drastic is dire or severe
extreme, strong, radical, severe, harsh
(adj.) rough, irregualr; severe, stern; strong; stormy.
severe, harsh, bleak, dour, grim, hard, stark
Beating can be a word for severe setback. Blow is another word for severe setback.
severe
small ;not major or severe
Another word for sovereign is severe and is used in a pacifistic way. Aplus answer independent.
Unexpected and really bad.
severe, extravagant, strong, extreme
Another word for very strict or harsh is stern.
hardy
Another word meaning drastic is dire or severe
A severe shortage of rain is called a drought ( or a drowth); one of food is called a famine.
extreme, strong, radical, severe, harsh
(adj.) rough, irregualr; severe, stern; strong; stormy.