Labially

Part of speech: adverb

Definitions

1. In a manner involving or produced by the lips, especially as a feature of speech sounds
2. With respect to the lips or articulation involving lip movement, as in phonetic production
3. Concerning or involving the lips, particularly in the production or quality of spoken sounds

Etymology: "Labially" is a plain formation: the adjective "labial," meaning of or relating to the lips, with the adverbial suffix "-ly" attached. "Labial" itself comes from Latin "labium," meaning lip, and the adjective is the form used for sounds and articulations made with the lips, such as the consonants "p," "b," and "m." Adding "-ly" turns it into an adverb describing how something is done, so a sound produced "labially" is articulated with the lips.