ENGLISH
REFERENCE

fool with

phr. v..
B2 Upper Intermediate Oxford Informal

phr. v.. to play with something in a careless way or to waste time on something that is not important.

phr. v.. to handle something idly or meddle with a mechanism; can also mean to engage in casual or aimless activity with a person or object.


SIMPLE

Don't fool with the thermostat or the house will get too hot.

CONTEXTUAL

He spent the whole afternoon fooling with his old car engine but couldn't get it to start.

COMPLEX

The technician warned the staff not to fool with the calibration settings, as even a minor adjustment could compromise the entire experiment.

Particles
with
Separability
inseparable
Pattern
fool + with + object
Usage

often used as a warning or to describe unproductive behavior.

Teaching tip

contrast with 'mess with' which is more common in modern speech; 'fool with' can imply a lack of seriousness or expertise.

Pitfall

He is fooling with of the radio.He is fooling with the radio.the preposition 'with' is the only particle needed before the object; do not add 'of'.

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