lethargic (adjective) lethargic: lazy, sluggish
Sinonime: barbarous, bloodthirsty,
callous,
ferocious, gruff,
hard,
harsh,
heartless, impolite,
inhuman,
insensitive,
merciless, pitiless, remorseless,
rough, rude,
ruthless,
savage,
severe, uncivil, uncivilized, unfeeling, unmannerly, unmerciful,
viciousAntonime: generous,
humane, kind,
nice