means In or into one place, group, or union — with others rather than alone, or with parts joined into a whole.

from From Old English 'tōgædere,' a fusing of 'tō' (to) and 'gæderian' (to gather, to bring together) — itself related to 'gæd,' meaning fellowship or companionship. So 'together' is literally 'to a gathering': the same root that gives us 'gather' and the dialect word 'gad' (to roam in company). The notion of 'gathering' lies at its very heart — to be together is to be drawn into one heap, one fold, one crowd.