ph.

1. used of a group whose members acted or were acted upon collectively and when `all' and `together' can be separated by other words

    e.g. they were herded all together
           they were all herded together
           the books lay all together in a heap
           the books all lay together...

2. all at the same time

    e.g. Let's say `Yes!' all at once

    Synonym: all at once