Idle for is common with periods of time. Idle in is used when in introduces a place, activity, or context rather than a fixed adjective pattern.
Use idle for to describe being inactive for a period of time. Idle in often introduces a context or place where inactivity happens.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
Idle for shows how long someone or something is inactive.
Idle in introduces a location or setting.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
Use for with periods of time.
✕ The factory was idle in three months. ✓ The factory was idle for three months.In introduces place; for introduces time.
✕ The cars stayed idle for the garage. ✓ The cars stayed idle in the garage.Idle for usually needs a period of time.
✕ The plant was idle for. ✓ The plant was idle for several days.In often adds contextual information rather than forming a special adjective pattern.
✕ The staff were idle in work. ✓ The staff were idle during work hours.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Yes. It is commonly used for periods of inactivity.
Use idle in when in introduces a place or context where inactivity occurs.
Yes. Idle can describe inactive people, factories, vehicles, and other things.
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