Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

"unthinkable," 1520s, from Late Latin incogitabilis, from in- "not" (see in- (1)) + cogitabilis, from stem of cogitare (see cogitation).

MORE RELATED WORDS FOR INCOGITABLE

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.