6
collaboratively
2
in league
2
mutually(closely, jointly, collectively)
1
all at once
1
all together(expression, together, united, closely, jointly)
1
as one(expression, together, united, jointly, collectively)
1
at one fell swoop(expression, idiom, closely, jointly, collectively)
1
closely(jointly, collectively, commonly, mutually)
1
coincidentally(closely, jointly, collectively, unitedly, mutually)
1
collectively(together, united, closely, jointly, unitedly)
1
combined(closely, jointly, collectively, unitedly, mutually)
1
commonly(together, united, closely, jointly, collectively)
1
concertedly(together, united, closely, jointly, collectively)
1
concomitantly(closely, jointly, collectively, unitedly, mutually)
1
concurrently(closely, jointly, collectively, mutually)
1
conjointly(closely, jointly, collectively, unitedly, mutually)
1
contemporaneously(closely, jointly, collectively, commonly, unitedly)
1
en masse(expression, together, united, closely, jointly)
1
hand in glove(expression, idiom, closely, jointly, collectively)
1
hand in hand(expression, idiom, closely, jointly, collectively)
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APASmart Define. (2015). in cooperation thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/in_cooperation/thesaurus/synonyms
ChicagoSmart Define. 2015. "in cooperation thesaurus" https://smartdefine.org/in_cooperation/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, in cooperation thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/in_cooperation/thesaurus/synonyms>.
MLASmart Define. "in cooperation thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/in_cooperation/thesaurus/synonyms>