in conjunction with; combined
"our salaries put together couldn't pay for the damage"
"we couldn't pay for the damages with all our salaries put together"
In a collective manner; viewed together as a whole; to be treated as a single unit, rather than the items that make up the collection separately.
"The students acted collectively to ensure their entire class received extra credit for the group project."
In plain English: Collectively means doing something together as a group where everyone contributes to the same result.
"The team worked collectively to finish the project before the deadline."
Usage: Use collectively when an action or result applies to a group considered as one unified entity rather than its individual members. This adverb often clarifies whether statistics describe separate individuals combined versus the sum of their parts acting together.
The word collectively comes from combining the adjective collective with the suffix -ly. It entered English as a straightforward formation to describe actions done by a group together.