Sub-

//sʌb// prefix

prefix ·Rare ·Advanced level

Definitions

Prefix
  1. 1
    Under, beneath. morpheme

    "subterranean"

  2. 2
    Subsidiary, secondary. morpheme

    "subplot"

  3. 3
    Almost, nearly. morpheme

    "subconical"

Synonyms

All synonyms
hypoinfrapenequasiunder

Antonyms

All antonyms
super

Example

More examples

"Contrarily, the prefix “sub-” doesn’t change meaning so much as it provides specificity, as seen in the difference between “title” and “subtitle.”"

Etymology

From Latin sub (“under”). Doublet of hypo-.

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