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Glite Dictionary
to change someone's tune

to change someone's tune

5.0
To have a different opinion after seeing new facts or benefits
  • idiom
  • Informal
translation icon : cambiar de opinión
  • He decided to change his tune after seeing the results.

Examples

  • You'll change your tune when you realize how much this decision will benefit you.

  • He was critical of the plan at first, but after hearing the details, he changed his tune.

  • If they offer her a promotion, she might change her tune about leaving the company.

  • Why did she change her tune so suddenly?

  • After seeing the documentary, he finally changed his tune about climate change.

  • She used to oppose the new policy, but the latest data changed her tune.

  • When presented with the facts, he changed his tune and supported the initiative.

Synonyms

to come around
vsto change someone's tune
81 4.1

To change your mind and accept something you first refused

is used for responding to new evidence whether or not someone first resisted
to soften
vsto change someone's tune
49 3.3

Become more willing to change your mind

is a response to new evidence or circumstances rather than pressure
to flip-flop
vsto change someone's tune
  • Literature
23 5.3

To suddenly change your opinion or decision

is a single response to evidence or circumstances not habitual inconsistency
to recalibrate
vsto change someone's tune
7 6.5

Change a plan or attitude to fit new information

is mainly about shifting personal opinion or attitude in reaction to evidence
to change one's tune
vsto change someone's tune
  • Informal
6 5.1

To show a different opinion after you were against it before

is a response to new evidence that need not be sudden
to come round
vsto change someone's tune
4 3.7

Change your mind because someone persuades you or you learn new facts

is a reaction to new evidence or circumstances rather than only persuasion
to do an about-face
vsto change someone's tune
  • Informal
3 6.6

To suddenly change your opinion or plan to the opposite

is a shift in view caused by evidence but not necessarily a full reversal
to turn one's coat
vsto change someone's tune
8.5

Change which person or group you support for your own benefit

is a response to evidence or circumstances not motivated by personal advantage

Antonyms

to stick to
343 3.0

Keep doing something without changing it, for example following a plan

How Attitude-Changing

to do an about-face
  • Informal
3 6.6
to reverse
329 3.2
to change someone's tune
  • Informal
5.0
to soften
49 3.3

Surface Forms

change someone's tune infinitive
changed someone's tune past
changed someone's tune past participle
changing someone's tune present participle
changes someone's tune third person singular

Morphology

change + someone's + tune

The verb 'change' clearly signals alteration, but the use of 'tune' here is metaphorical (melody → manner/attitude) and not the basic concrete meaning a B1 learner would first expect. Because part of the meaning (altering something) is transparent while the crucial mapping of 'tune' to 'opinion/attitude' is idiomatic and requires prior exposure, this expression is best classed as semi-transparent.

Etymology

Change someone's tune may come from music: when a singer or musician changes their tune, the melody, mood and message of the song change. That's why today, to change someone's tune means to 'change' their 'opinion' or 'attitude'.