rust off
C1 neutral inseparable intransitive
In simple words
When something falls off or breaks away because it has gone rusty
Literal meaning: To come off as a result of rusting — fully transparent
Meanings
1 C1 neutral
For a metal component to detach or break away from a surface because rust has corroded it
"The exhaust pipe had completely rusted off and was dragging along the road."
Grammar: inseparable
Usage notes
A fairly specific and literal phrasal verb. Common in contexts of old vehicles, machinery, or metal structures. Rarely used figuratively.
Commonly used with
bolt hinge bracket exhaust panel screw
Forms
Base
rust off
I/you/we/they
3rd person
rusts off
he/she/it
Past simple
rusted off
yesterday
Past participle
rusted off
have + pp
-ing form
rusting off
continuous
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