Completism

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A desire to obtain a complete collection of some type of thing. uncountable

    "A novel type of completism is Rothman's record and determination of attending every major convention held in this country."

Example

More examples

"A novel type of completism is Rothman's record and determination of attending every major convention held in this country."

Etymology

From complete + -ism. Originally from fanspeak, the slang of science fiction fans.

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