English
grislily
From grisly + -ly.
Formed from grisly + -ly
Proto-Germanic *grīsaną ‘to be frightened, to be in awe’
Proto-West Germanic *grīsan ‘to be frightened’
Old English grīsan ‘to shudder with horror’
Old English grisliċ ‘grisly, horrible’
Middle English grisely
English grisly
Today it means
adv In a grisly manner.
Language periods are conventional ranges, not dates for this word.
Etymograph / grislily