'evenly-driven' originates from Modern English as a compound of 'evenly' and 'driven'; 'evenly' comes from Old English 'efen' (via Middle English 'even' + suffix '-ly'), where 'efen' meant 'level, equal', and 'driven' is the past participle of 'drive' (Old English 'drīfan').

'evenly' changed from Old English 'efen' to Middle English 'even' and then formed the adverb with '-ly' to become 'evenly'; 'driven' developed as the past participle form of Middle/Old English 'drive' (from 'drīfan'), and the two elements were combined in Modern English to form the compound adjective 'evenly-driven'.

Initially the components meant 'level/equal' ('even') and 'to force/move' ('drive'); over time the compound came to mean 'propelled or operated in a uniform, balanced manner' in technical and descriptive contexts.