'unremarkably-done' originates from the English prefix 'un-' meaning 'not', combined with 'remarkable', which comes from the Latin 'remarcabilis', and 'done', from Old English 'don'.

'unremarkably-done' evolved from the combination of 'unremarkable' and 'done', both of which have roots in Middle English.

Initially, 'unremarkable' meant 'not worthy of notice', and 'done' meant 'completed'. Together, they convey the idea of something completed without distinction.