A denominative from chem'ah; something buttery (i.e. Unctuous and pleasant), as (figuratively) flattery -- X than butter.
see HEBREW chem'ah
H4260. machamaah
מַחֲמָאֹת noun feminine plural curd-like things = smooth, hypocritical, words, only construct מ ׳חָֽלְקוּ מִּיו Psalm 55:22 smooth are the butter-words of his mouth (EW De Hup), but read probably ((פניוׅ פיו מֵחֲמָאֹת חלק(ו)) his mouth (face) is smoother than curds (Vrss Ki Thes Ol Che Bae We Du [מֵחֶמְאָה]).
מַחֲמָאֹת noun feminine plural only (apparently construct) ׳מ חָֽלְקוּ מִּיו Psalm 55:22, according to Ew De Hup = curd-like (i.e. smooth, hypocritical) words, smooth are the butter-words of his mouth; but read probably (פניו) מִּיו (or מֵחֶמְאָה) מֵחֲמָאֹת חלק(ו) his face is smoother thm curds (Vrss Ki Thes Ol Che Bae We).