'aphoristically' ultimately originates from Greek, specifically the word 'aphorismos' (ἀφορισμός), where the prefix 'apo-' meant 'away' and the verb root 'horizein' meant 'to limit, to define'.

'aphorismos' in Greek passed into Latin as 'aphorismus' and then into English as 'aphorism' (late 16th century). The adjective 'aphoristic' developed from 'aphorism' (19th century), and the adverb 'aphoristically' was formed from the adjective.

Initially it referred to a 'definition' or 'distinguishing statement' in Greek; over time it came to mean a concise, often witty or pointed statement ('aphorism'), and now 'aphoristically' describes doing something in that concise/pointed manner.