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mail it in

B2 informal inseparable intransitive
In simple words

To do something without really trying — just doing enough to get it done, but not caring about doing a good job.

Literal meaning: To send something by post rather than delivering it in person — evoking detachment and distance from the task.

Meanings

1 B2 idiomatic informal

To perform a task, duty, or activity with the bare minimum of effort, showing no investment or enthusiasm.

"You could tell the actor was just mailing it in during the film's final act."

Grammar: inseparable
2 B2 idiomatic informal

To show up to a job or obligation physically but without genuine engagement, care, or commitment.

"After the layoff announcements, half the staff was mailing it in until their last day."

Grammar: inseparable
Usage notes

Primarily American English. Originates from the idea of submitting work by post (mail) rather than in person, implying detachment and lack of investment. Often used in sports, entertainment, and workplace contexts. 'He's just mailing it in this season' suggests an athlete or performer going through the motions without passion.

Commonly used with

performance season presentation clearly obviously just

Forms

Base
mail it in
I/you/we/they
3rd person
mails it in
he/she/it
Past simple
mailed it in
yesterday
Past participle
mailed it in
have + pp
-ing form
mailing it in
continuous

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Synonyms

phone it in go through the motions coast do the bare minimum sleepwalk through it

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