unthinkable
- adjective (adj)
Meaning: incredible, unusual
Synonyms:
absurd
beyond belief
beyond possibility
exceptional
extraordinary
illogical
implausible
impossible
improbable
incogitable
inconceivable
insupportable
outlandish
out of the question
preposterous
rare
singular
unbelievable
uncommon
unimaginable
unique
unlikely
unordinary
unreasonable
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.