with all or everything included: The debt amounted altogether to twenty dollars.
with everything considered; on the whole: Altogether, I'm glad it's over.
in the altogether, Informal.nude: When the phone rang she had just stepped out of the bathtub and was in the altogether.
Origin: 1125–75; variant of Middle Englishaltogeder. See all, together
Synonyms 1. utterly, totally, absolutely.
Usage note The forms altogether and all together, though often indistinguishable in speech, are distinct in meaning. The adverb altogether means “wholly, entirely, completely”: an altogether confused scene. The phrase all together means “in a group”: The children were all together in the kitchen. This all can be omitted without seriously affecting the meaning: The children were together in the kitchen.