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Showing results for unshakable. Search instead for unslakable.
Definitions

unshakable

ADJECTIVE
steady
Synonyms
STRONGEST
abiding adamant inflexible unflappable unwavering
WEAK
firm fixed impregnable unsinkable
Antonyms
STRONGEST
flexible pliant soft yielding
WEAK
shakable weak

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