English Reference

Phrasal verb

fool with

Definition

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

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

Examples

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

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

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

Examples

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.”

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'.

Phrasal verb

Particles

with

Separability

inseparable

Pattern

fool + with + object

Synonyms

play withmess withfidget withtinker with

Antonyms

leave aloneignore

Grammar

This entry

Level
B2 · Upper Intermediate
Updated

Scan code

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English Reference