'conventionally-done' originates from the word 'convention,' which comes from Latin 'conventio,' meaning 'a coming together.' The suffix '-ally' indicates the manner of action, and 'done' is the past participle of 'do,' from Old English 'dōn.'

'Convention' evolved from Latin 'conventio' to Old French 'convention,' and eventually became the modern English word 'convention.' The phrase 'conventionally-done' combines this with the past participle 'done.'

Initially, 'convention' referred to a formal meeting or assembly, but over time it evolved to mean established practices or norms, leading to the phrase 'conventionally-done' to describe actions done in a traditional manner.