- British informal something easily accomplished
C20: perhaps from dodder (vb) to totter
Examples from the Web for doddle
Morning talk shows should be a doddle for a President: softball questions easily answered with a platitude or three.‘Michelle Will Not Run For Office’: Obama's Daytime TV Confessional
May 30, 2014
He could'nt hardly contrive to doddle home, and when he did he looked so tedious bad dat his wife sent for de doctor dirackly.Highways & Byways in Sussex
During a whole week the master tried by every means to get Doddle to learn something; but Doddle could learn nothing.
The master seemed perplexed, for Doddle was gazing at him with a look of mild self-satisfaction.
The master looked over his spectacles again at Doddle with an expression of unutterable amazement.