'balder' is the comparative form of the adjective 'bald,' which originates from Old English 'beald' or 'bald', where the word originally meant 'bold' or 'brave'.

'bald' appeared in Old English as 'beald'/'bald', continued through Middle English as 'bald', and the comparative form 'balder' developed in Middle English and survived into modern English as the comparative of 'bald'.

Initially the Old English word meant 'bold' or 'brave', but the sense shifted over time to mean 'having little or no hair'; today 'balder' means 'more lacking hair' (more bald).