Webster's Revised Unabridged Dictionary · 1913

Intonate

Intonate , intransitive verb

[Latin intonatus, past participle of intonare to thunder, resound.]

To thunder. [Obsolete] — Bailey

Intonate , intransitive verb

[See Intone.]

1.
(Music) To sound the tones of the musical scale; to practice the sol-fa.
2.
To modulate the voice in a musical, sonorous, and measured manner, as in reading the liturgy; to intone.

Intonate , transitive verb

To utter in a musical or sonorous manner; to chant; as, to intonate the liturgy.