cantiller

A specialized liturgical verb meaning to chant or intone a sacred text with melodic modulation matched to each syllable. Cantillation spans religious traditions — a muezzin cantilling the call to prayer, a cantor cantilling Torah verses in a synagogue, a priest cantilling at the altar — but the word itself is narrow, technical vocabulary confined to religious and musicological contexts.

• Le hazan cantille les versets de la Torah chaque samedi. — The cantor chants the Torah verses every Saturday.
• Le muezzin cantille l'appel à la prière depuis le minaret. — The muezzin chants the call to prayer from the minaret.
• Les moines cantillaient les psaumes en latin. — The monks chanted the psalms in Latin.

Cantiller is not a general word for 'to sing' (chanter) — it specifically describes the melodic recitation used in religious ritual, so using it for ordinary singing sounds out of place.