Seedot's name origin is listed as seed and tot. Tot meaning 'a small child'. But considering the fact that Nuzleaf is from 'nuzzle' and Shiftry is from 'shifty' which are both verbs (that are loosely about "moving about"), wouldn't 'totter' follow that theme? Not to mention, Seedot's sprite does seem to be tottle-ing... Unless the source for 'tot' is an official one, but I couldn't really find anything...