knock yourself out

Help yourself freely

An informal way of granting permission, often with a hint of indifference—go ahead, help yourself, do as you please: There's beer in the fridge if you want some. Knock yourself out.

The phrase suggests the speaker doesn't object but isn't particularly invested in the outcome.

It can also mean to exhaust oneself through effort: She knocked herself out planning the wedding.

Related

indulge · permission · faint · pass out · exhaust · tire · unconscious · lights out · collapse · sarcasm · have at it · go nuts · have a ball · free rein · encouragement · dismissive · cold · floor

Categories
Opposites
permission/encouragement

knock yourself outdon't you dare

absolutely not · no way · over my dead body · forget it · hands off

enthusiasm/interest level

knock yourself outthink twice

Deliberate before acting

be careful · don't bother

enthusiasm/reluctance

knock yourself outI suppose

Tentative concession phrase

whatever · suit yourself · begrudgingly

Family

knock, yourself, knocks, knocked, knocking, knocker, knockers, self, oneself

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G