'unevenly-developed' originates from the combination of 'unevenly' and 'developed', where 'unevenly' means 'not level or smooth' and 'developed' means 'having advanced or grown'.

'Unevenly-developed' combines the adverb 'unevenly' with the past participle 'developed', forming a compound adjective.

Initially, 'unevenly' meant 'not level or smooth', and 'developed' meant 'having advanced or grown'. Together, they describe something that has grown in an irregular manner.