Find Synonyms

cosponsor Synonyms

Another word for cosponsor

Choosing another word for cosponsor depends on context, so the 10 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

A person, organization, or legislator that joins with one or more others to propose, finance, or officially back a legislative bill, event, or project.

Usage Example

"The senator agreed to become a lead co-sponsor of the bipartisan infrastructure bill."

Strongest
co-sponsor
Strong
sponsor
backer
patron
supporter
Weak
underwriter

• verb (Context 2)

To sponsor, endorse, or finance a legislative bill, event, or initiative jointly with one or more other people or organizations.

Usage Example

"Two local universities will co-sponsor the annual science symposium this autumn."

Strongest
co-sponsor
Strong
sponsor
underwrite
endorse
back
Weak
support

Opposites of cosponsor

The opposite of cosponsor shifts depending on context. Common opposites include:

oppose
opponent
veto
adversary
See all opposites of cosponsor

• Nearby Words

cosmos
cosplay
cosplayer
cosponsor
cosponsorship
cosset
cost

Cite this Entry

Wordmom. (2026). Synonyms for Cosponsor. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/cosponsor
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