transitive & intransitive verb . To make or become cheerful. Used with up.

To creak; shriek; groan.

To make a noise, as a bird; chirp.

Also spelled cherk.

To be or become cheerful.

Lively; cheerful; pert; in good spirits.

noun. A perverted form of chert.

intransitive verb. To shriek; to gnash; to utter harsh or shrill cries.

intransitive verb. To chirp like a bird.

transitive verb. To cheer; to enliven.

adjective. Lively; cheerful; in good spirits.

verb. To become happier.

adjective. lively; cheerful; in good spirits

verb. make a shrill creaking, squeaking, or noise, as of a door, mouse, or bird

"Chirk, chirk, chirk, it went, the sound of a spoon being rapidly whisked round a basin."

to chirk up  

sound  vocalise  vocalize  voice  

cheer  cheerful  enliven  gnash  lively