methinks definition by Webster's New World
Origin: Middle English me thinketh ; from Old English me thyncth ; from me, me, to me plush thyncth, it seems ; from thyncan, to seem: see think
methinks definition by American Heritage Dictionary
intransitive verb Past tense me·thought Archaic
Origin: Middle English me thinkes, from Old English mē thyncth : mē, to me; see me + thyncth, it seems; see tong- in Indo-European roots.