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phase in

B2 neutral separable transitive
In simple words

To start using something new slowly, a little at a time, so the change isn't too sudden.

Meanings

1 B2 neutral

To introduce a new system, law, or practice gradually over a set period rather than all at once.

"The new safety regulations will be phased in over three years to give businesses time to adjust."

Grammar: separable
2 B2 neutral

To gradually incorporate new employees, equipment, or resources into an existing operation.

"The school decided to phase in tablet computers one year group at a time."

Grammar: separable
Usage notes

Commonly used in business, law, government, and education to describe the gradual adoption of new rules, systems, or technologies. Often appears in passive constructions: 'the new system will be phased in over two years'. The opposite of 'phase out'.

Commonly used with

regulations system technology curriculum changes policy

Forms

Base
phase in
I/you/we/they
3rd person
phases in
he/she/it
Past simple
phased in
yesterday
Past participle
phased in
have + pp
-ing form
phasing in
continuous

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Synonyms

introduce gradually roll out implement gradually bring in gradually stage in ease in

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