i Register
In some senses, cheerly is marked as archaic. Watch for register when choosing this word.
adj
Cheerful, gay; not gloomy.
Wel ſaid, thou look'ſt cheerely, / And Ile be with thee quickly: yet thou lieſt / In the bleake aire.
The first thing that roused me from my meditations, was a cheerly voice that saluted me as I was approaching Tattersall's; round whose gates a detachment of tilburies, stanhopes, and led-horses were clustered."
adv
Cheerily, cheerfully, heartily; briskly.
My louing Lord, I take my leaue of you, [...] Not ſicke, although I haue to do with death, / But luſtie, yong, and cheerely drawing breath.
What matters me who wears the crown of France? / Whether a Richard or a Charles possess it? / They reap the glory—they enjoy the spoil— / We pay—we bleed!—The sun would shine as cheerly, / The rains of heaven as seasonably fall, / Tho' neither of these royal pests existed.