Falsy

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Evaluating to false in a Boolean context. not-comparable

    "In JavaScript, any expression or statement that expects a boolean value will work with a truthy or falsy value, so the fact that && does not always evaluate to true or false does not cause practical problems."

Antonyms

All antonyms
truthy

Example

More examples

"In JavaScript, any expression or statement that expects a boolean value will work with a truthy or falsy value, so the fact that && does not always evaluate to true or false does not cause practical problems."

Etymology

From false + -y, to be an antonym to truthy.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.