all together is an adverb meaning "all at the same time". It carries 2 recorded senses.
used of a group whose members acted or were acted upon collectively and when `all' and `together' can be separated by other words
“they were herded all together”
“they were all herded together”
“the books lay all together in a heap”
“the books all lay together...”
Definitions, synonyms and semantic relations for all together come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.