'lark-like' originates from the English word 'lark,' which refers to a type of bird known for its melodious song, combined with the suffix '-like,' indicating resemblance.

'lark' has been used in English since the Old English period, derived from the Proto-Germanic word 'lāwrikōn,' and 'like' from Old English 'gelīc,' meaning 'similar.'

Initially, 'lark' referred to the bird itself, but over time, 'lark-like' evolved to describe anything resembling the bird's cheerful nature.