earnest

> earnest
(adjective)
animated, ardent, eager, cordial, fervent, fervid, glowing, hearty, impassioned, importune, warm, zealous.
fixed, intent, steady.
sincere, true, truthful.
important, momentous, serious, weighty.

> earnest
(noun)
reality, seriousness, truth.
foretaste, pledge, promise.
handsel, payment.