inconceivable
- adjective (adj)
Meaning: beyond reason, belief
Synonyms:
extraordinary
fantastic
imcomprehensible
implausible
impossible
improbable
incogitable
incredible
insupposable
mind-boggling
phony
rare
reachy
staggering
strange
thin
unbelievable
unconvincing
unheard-of
unimaginable
unknowable
unlikely
unsubstantial
unthinkable
weak
won’t fly
won’t wash
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.