rack one's brains
VERB
concentrate
Synonyms
Antonyms
VERB
mull
Synonyms
Antonyms
VERB
puzzle
Synonyms
Antonyms
VERB
ratiocinate
Synonyms
Antonyms
VERB
ruminate
Synonyms
STRONGEST
STRONG
WEAK
Antonyms
VERB
think
Synonyms
Antonyms
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.