Traditionally considered to be a series of nouns ꜥnḫ + wḏꜣ + snb, literally meaning ‘life, prosperity, health (to him)’. More recently the phrase has instead been analyzed as a series of verbs, each with the unwritten stative ending .w, thus literally meaning ‘(may he be) alive, sound, healthy’.
an honorific phrase used after the names of kings, queens, princes, etc., after the words of a king, ruler, or prince, and after references to the royal household.
James P[eter] Allen (2010) Middle Egyptian: An Introduction to the Language and Culture of Hieroglyphs, 2nd edition, Cambridge: Cambridge University Press, →ISBN, page 221.