SG Heritage Dictionary

Intonate [Verb intransitive] Webster's Dictionary 1828

1. To sound; to sound the notes of the musical scale.

Intonate [Verb intransitive] Webster's Dictionary 1913

2. To sound the tones of the musical scale; to practice the sol-fa.

3. To modulate the voice in a musical, sonorous, and measured manner, as in reading the liturgy; to intone.

Intonate [Verb transitive] Webster's Dictionary 1913

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

Intonated [Imperfect tense and past participle] Webster's Dictionary 1913