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to change one's tune

to change one's tune

6 5.1
To show a different opinion after you were against it before
  • idiom
  • Informal
translation icon : cambiar de opinión
  • During the debate, she changed her tune after realizing the audience disagreed with her view.
  • the president changed his tune
  • he's changed his tune now
  • changed his tune later

Examples

  • If he wants my vote again, he had better change his tune.

    Blog text (31)
  • Then I stepped in, and this guy changed his tune real fast.

    Blog text (10)
  • But really, why would you believe anyone who changes his tune just before election time?

    Blog text (23)
  • David gets the message and changes his tune.

    Fiction book (1997)
  • Once he is called out on his lies, he changes his tune.

    Blog text (22)
  • Maybe if they pay a little visit to her home, she'll change her tune.

  • Did you vote for Obama, hoping that he would change his tune during his second term?

    Blog text (26)
  • Asked what made him change his tune, Lee insisted that it was support from city officials that convinced him.

    Blog text (19)
  • Don't change your tune later, okay?

  • And if you don't change your tune, you're going to be forbidden on campus as well.

Synonyms

to change my mind
vsto change one's tune
811 2.6

Decide to think or act differently from before

is often sudden or follows being persuaded or proved wrong
to come around
vsto change one's tune
81 4.1

To change your mind and accept something you first refused

is often sudden or follows being persuaded rather than slow acceptance
to come round
vsto change one's tune
4 3.7

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

is often sudden or follows being persuaded or proved wrong
to do a 180
vsto change one's tune
  • Informal
4 6.8

To completely change your opinion or decision

is often less absolute and can be only a partial shift
to do an about-face
vsto change one's tune
  • Informal
3 6.6

To suddenly change your opinion or plan to the opposite

is not always a complete opposite and may be milder
to about-face
vsto change one's tune
  • Literature
3 6.7

To change your opinion or position completely and suddenly

is less extreme and not always a full reversal
to change someone's tune
vsto change one's tune
  • Informal
5.0

To have a different opinion after seeing new facts or benefits

is often sudden or follows direct persuasion or proof

Antonyms

12 6.7

Keep supporting your idea when others disagree

Keep the same decision even when others disagree

How Much

to change one's tune
  • Informal
6 5.1
to backtrack
42 4.3
to soften
49 3.3

Surface Forms

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

Morphology

change + one + tune

The meaning 'alter one's opinion or attitude' is a metaphorical extension of the literal parts: 'change' (alter) + 'tune' (melody/manner) where 'tune' stands for manner or tone. A B1 learner who knows the words may guess it involves changing something about oneself, but mapping 'tune' specifically to attitude and the idiomatic nuance (suddenness or persuasion) is not fully predictable without prior exposure, though cross‑linguistic parallels (e.g. French 'changer de ton') make it partially transparent.

Etymology

Change one's tune may come from music: imagine a singer who starts one song but then changes the tune to a different melody to show a new feeling. That's why the phrase means 'to change your opinion or attitude'.