en_tn/pro/26/24.md

disguises his feelings with his lips

Disguising his feelings represents keeping people from knowing what his feelings are. The phrase "his lips" is a metonym for what he says. AT: "hides his feelings with what he says" or "speaks in such a way that people cannot know his true feelings" (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-metonymy)

he lays up deceit within himself

Being deceitful is spoken of as if he were storing deceit within himself. Possible meanings are that "deceit" refers to lies. AT: "he likes his many lies" or 2) deceit refers secret plans to harm people. AT: "he secretly plans to harm people" (See: rc://en/ta/man/translate/figs-metaphor)