phase out

phase out — phrasal verb

  • phase outbase form
  • phases out3rd person singular
  • phasing out-ing form
  • phased outpast simple

1. to stop using, producing, or supplying something gradually and deliberately, usu

1.片語動詞及物B2
釋義

to stop using, producing, or supplying something gradually and deliberately, usually because it is being replaced with something newer or better.

例句

Constanza's team is phasing out the old database system this quarter.

phase out + object (old system)

Single-use plastic bags are being phased out across Taiwan.

passive: be phased out

同義詞
  • discontinue

    more general; can be sudden or gradual, while phase out specifically implies a gradual, planned withdrawal

  • eliminate

    stronger and more final; does not carry the sense of a staged, gradual process

  • retire

    used for equipment or assets; less common for policies or practices

反義詞
  • phase in

    the direct opposite — to introduce something gradually as something else is removed

  • introduce

    general opposite, but does not imply gradualness

文法句型

phase + object + out

phase out + object

be phased out

用法筆記

Frequently used in the passive (be phased out) when the focus is on the item being removed rather than the person doing it. The opposite process is phase in.

常見錯誤

❌The company phased out the project overnight.
✅The company cancelled the project overnight.
💡phase out describes a gradual process, not a sudden stop.
❌We need to phase out the use of this chemical soonly.
✅We need to phase out the use of this chemical soon.
💡'soonly' is not a word; use 'soon'.