From 하외〮욤〮 (hàwóyywóm, “yawn”) + ᄒᆞ〮다〮 (hótá, “to do”, light verb deriving verbs).
하외〮욤〮ᄒᆞ〮다〮 (hàwóyywómhótá) (infinitive 하외〮욤〮ᄒᆞ야〮, sequential 하외〮욤〮ᄒᆞ니〮)