ou (Greek #3756)
the absolute negative (compare 3361) adverb; no or not
KJV usage: + long, nay, neither, never, no (X man), none, (can-)not, + nothing, + special, un(-worthy), when, + without, + yet but. See also 3364, 3372.
Pronounce: oo
Origin: οὐκ (ook), and (before an aspirate) οὐχ (ookh) a primary word
apollumi (Greek #622)
to destroy fully (reflexively, to perish, or lose), literally or figuratively
KJV usage: destroy, die, lose, mar, perish.
Pronounce: ap-ol'-loo-mee
Origin: from 575 and the base of 3639