'uncommonly-borne' originates from the combination of 'uncommonly' and 'borne', where 'uncommonly' means 'rarely' and 'borne' is the past participle of 'bear', meaning 'carried'.

'uncommonly-borne' combines the adverb 'uncommonly' with the past participle 'borne', forming a compound adjective.

Initially, 'borne' meant 'carried', and 'uncommonly' meant 'rarely'. Together, they describe something rarely carried or supported.