✍️ To sign together 🤝 To show support

to co-sign

4.6

Publicly say you support an idea, plan, or person

verb
/ˈkoʊˌsaɪn/

Informal

: apoyar

I completely co-sign her view that the new policy will improve work–life balance.

Examples

I co-sign this statement about climate change.
She co-signed the petition for better public transport.
Many celebrities decided to co-sign the petition to publicly endorse the charity's reforms.
After the speech, three senior researchers co-signed a joint statement supporting the study.
Many celebrities decided to co-sign the petition to publicly endorse the charity's reforms.
I completely co-sign her view that the new policy will improve work–life balance.
After the speech, three senior researchers co-signed a joint statement supporting the study.

Synonyms

to endorse

vsto co-sign

183 4.2

To publicly show support for a person or idea

is informal support made publicly rather than as formal approval

to second

vsto co-sign

Formal

7 4.6

To give formal support to a proposal during a meeting

is informal public agreement not a required meeting approval

Antonyms

to oppose

∞ 2.9

To be against something and try to stop it

to criticize

701 3.3

To say what is wrong with someone or something

How Supportive

to champion

64 4.2

to endorse

183 4.2

to co-sign

Informal

4.6

to approve

∞ 1.6

in agreement

71 2.1

Surface Forms

co-sign infinitive

co-signed past

co-signed past participle

co-signing present participle

co-signs third person singular

Morphology

co-sign = sign (semi-transparent) = co + sign

The figurative sense 'to endorse or express support' extends from the literal 'to sign together', so the relation is inferable but requires pragmatic extension.

Etymology

Co-sign comes from the parts co- 'with' and sign 'to write your name', like when people add their name to a letter to show agreement. So to co-sign an idea or statement is to publicly agree with or support it.