O.E. togædere, from to (see to) + gædere "together" (adv.), apparently a variant of the adverb geador "together," related to gadrian (see gather). Ger. cognate zusammen substitutes second element with O.H.G. verbal cognate of Eng. same (OE also had tosamne "together"). Adjective meaning "self-assured, free of emotional difficulties" is first recorded 1966.