Yeasayer

//ˈjeɪˌseɪ.ɚ// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    One whose attitude is positive, optimistic, confidently affirmative.
  2. 2
    One who habitually agrees uncritically. derogatory

    "The “yeasayer effect” arises in AI models trained using reinforcement learning from human feedback (RLHF)—human “data labellers” rate the answer generated by the model as being either acceptable or not."

Synonyms

All synonyms
can-doerdoormatkowtoweroptimistoptimistyes man

Example

More examples

"The “yeasayer effect” arises in AI models trained using reinforcement learning from human feedback (RLHF)—human “data labellers” rate the answer generated by the model as being either acceptable or not."

Etymology

Origin: 1915–1920, after naysayer, from yea + say + -er, equivalent to yeasay + -er. First recorded use: 1920.

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