|Noah Webster's Dictionary|
1. (v.) To give a false representation; misrepresent; to show to be false; as, his wayward glance belied the truth of his testimony.
2. (v.) To show to be false; to convict of, or charge with, falsehood.
3. (v.) To tell lie about; to calumniate; to slander.
4. (v.) To mimic; to counterfeit.
5. (v.) To fill with lies.
Int. Standard Bible Encyclopedia
be-li': Is the translation of kachash, "to be untrue" (Jeremiah 5:12), "They have belied the Lord" (the American Standard Revised Version "denied Yahweh"), here used as synonym of "give the lie to."
In The Wisdom of Solomon 1:11 "belle" translates katapseudomai (the kata prefix referring to the kata in katalalia in the same verse), "A mouth that belieth destroyeth a soul."
Belie (1 Occurrence)
Psalms 89:33 Nevertheless my loving-kindness will I not utterly take from him, nor belie my faithfulness; (DBY)