Also Definition

Origin of Also

• From Middle English also, alswo, alswa, (also alse, als, as > English as), from Old English ealswā, eallswā (“completely so, additionally, just as, just so, even as, even so, as, as if, so, so as, likewise, also; likewise, in just the same way”), equivalent to all +‎ so. Cognate with Scots alsa, alswa (“also, even so, in the same way, as, as well”), West Frisian alsa (“so, just so, even so, thus”), Old Saxon alsō (“similarly, as if, just as, when”), Dutch alzo (“so, thus”), German also (“so, thus”), Danish altså (“so”), Swedish alltså (“so, therefore, accordingly, thus, then”). Compare also Swedish också (“also, too, as well”) and Albanian aq sa (“as much as”), compound of aq (“as much”) and sa (“how much, so, as”). See all, so, as.

  From Wiktionary

• Middle English from Old English ealswā eall all al-³ in Indo-European roots swā so so¹

  From American Heritage Dictionary of the English Language, 5th Edition