Another word for severe
stern, exacting, uncompromising, unbending, inflexible, unchanging, unalterable, inexorable, harsh, cruel, oppressive, close, grinding, peremptory, obdurate, resolute, austere, rigid, grim, earnest, stiff, forbidding, resolved, relentless, strait-laced, determined, unfeeling, insensate, with an iron will, strict, inconsiderate, firm, immovable, as firm as the Rock of Gibraltar, adamant, unyielding.
Difficult or rigorous
overbearing, tyrannical, mordant, sharp, exacting, stringent, drastic, domineering, rigid, oppressive, despotic, unmerciful, bullying, uncompromising, obdurate, relentless, unrelenting, hard, rigorous, austere, grinding, ascetic, grim, implacable, cruel, pitiless, critical, unjust, barbarous, censorious, crusty, gruff, crabbed, unmitigated, intractable, stubborn, autocratic, Draconian, with a heart of granite, stony-hearted, hard-shell*, rock-ribbed*, hidebound*; see also difficult 1.
severe applies to a person or thing that is strict, uncompromising, or restrained and connotes a total absence of softness, laxity, frivolity, etc. a severe critic, hairdo, etc. and may often imply harshness severe punishment, a severe tornado; stern implies an unyielding firmness, esp. as manifested in a grim or forbidding aspect or manner a stern guardian; austere suggests harsh restraint, self-denial, stark simplicity the austere diet of wartime, or an absence of warmth, passion, ornamentation, etc. an austere bedroom; ascetic implies extreme self-denial and self-discipline or even, sometimes, the deliberate self-infliction of pain and discomfort, as by religious fanatics an ascetic hermit
Another word for severeadjective
Rigorous and unsparing in treating others:demanding, exacting, hard, harsh, rigid, stern, strict, tough, unyielding. See easy
Cold and forbidding:austere, bleak, dour, grim, hard, harsh, stark. See attitude, hot
Causing sharp, often prolonged discomfort:bitter, brutal, hard, harsh, rough. See comfort
Conveying great physical force:hard, heavy, hefty, powerful. See big
Having great consequence or weight:earnest1, grave2, heavy, momentous, serious, weighty. See important
Causing or marked by danger or pain, for example:dangerous, grave2, grievous, serious. See help
Requiring great or extreme bodily, mental, or spiritual strength:arduous, backbreaking, burdensome, demanding, difficult, effortful, exacting, exigent, formidable, hard, heavy, laborious, onerous, oppressive, rigorous, rough, taxing, tough, trying, weighty. See heavy