know what side one's bread is buttered on

A form of know which side one's bread is buttered on — To be aware of where one's interests lie in a situation.

Meanings

verbknow what side one's bread is buttered on (third-person singular simple present knows what side one's bread is buttered on, present participle knowing what side one's bread is buttered on, simple past knew what side one's bread was buttered on or knew what side one's bread is buttered on, past participle known what side one's bread was buttered on or known what side one's bread is buttered on)

present singular third person knows what side one's bread is buttered on · participle present knowing what side one's bread is buttered on · past knew what side one's bread was buttered on · past knew what side one's bread is buttered on · participle past known what side one's bread was buttered on · participle past known what side one's bread is buttered on

  1. alternativeAlternative form of know which side one's bread is buttered on.

    The crowd, which included many children, cheered when Truman confided with a smile, “They know what side their bread is buttered on.”

    2008, Jerry Moriarity, Picking the Bones of Eleven Presidents and Others, →ISBN
    4 more examples

    But I’ve heard some of my medical friends make their private confessions. They know what side their bread is buttered on, and it isn’t buttered on the side of truth all the time.

    1922, Henry Berman, “Act I”, in The Faith of the Fathers: A Play in Three Acts, New York, N.Y.: Nicholas L. Brown, →OCLC, pages 43–44

    The haste with which Sir Stafford Cripps contradicted an unfortunate statement by one of his juniors last week showed that he at least knew what side his bread is buttered on. Mr Finnigan and the rest of us in Britain are living on the charity which America provides, and this, mark you, the country which pursues a policy our Labour friends sneer at as being decadent, out of date, etc. Take this away and all the fruits Labour could give would be lemons.

    1949 March 11, Not Amused [pseudonym], “Fruits of Labour”, in West Lothian Courier and Lanarkshire, Stirlingshire and Midlothian Herald, 77th year, number 3963, Bathgate, West Lothian, →OCLC, Letters to the Editor, page 2, column 5

    “Why didn’t he speak up?” / Fritz Vogel said, “That is what I asked, ‘couldn’t you protest?’ Richter answered somewhat feebly, I thought. He said, ‘I knew what side my bread is buttered on. Besides, who would have believed me?’”

    2004, Richard S. Wahlberg, chapter 7, in Master of His Fate, Tarentum, Pa.: Word Association Publishers, →ISBN, book 1, page 47

    ‘Amber will look after you. I’m good at issuing orders but I like to think I’m a fair boss – isn’t that so, Amber?’ / There was a flicker of a grin on Amber’s face. ‘I suppose you are.’ / ‘Amber’s good at knowing what side her bread is buttered on,’ Jamie muttered.

    2021, Zoë Miller, “Two Weeks Earlier”, in House in the Woods, Dublin: Hachette Books Ireland, published 2022, →ISBN, page 198
Cite this entry
APA

know what side one's bread is buttered on. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/know%20what%20side%20one's%20bread%20is%20buttered%20on

MLA

“know what side one's bread is buttered on.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/know%20what%20side%20one's%20bread%20is%20buttered%20on. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “know what side one's bread is buttered on,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/know%20what%20side%20one's%20bread%20is%20buttered%20on.

Source: know what side one's bread is buttered on on Wiktionary, CC BY-SA 4.0.