כָּחַשׁ (kâchashkaw-khash'verbbe disappointing)
[Heb] כָּחַשׁ ETCBC: כחשׁ‎ (verb|grow lean) OSHL: k.bf.aa TWOT: 975 GK: H3950 Greek: ἀρνέομαι
Derivation: a primitive root;
Strong's: to be untrue, in word (to lie, feign, disown) or deed (to disappoint, fail, cringe)
KJV: deceive, deny, dissemble, fail, deal falsely, be found liars, (be-) lie, lying, submit selves.