Standard Lemma guide

nontrivial

adj · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • UK: /ˌnɒnˈtɹɪ.vi.əl/

1

adj

Meaning 1

Not trivial.

Not obvious or easy to prove; not self-evident.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Not trivial.

Not being of the simplest kind; not being empty or a singleton.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

Examples

  • nontrivial subgroup

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Not trivial.

Needing significant computing power to solve; intractable.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From non- + trivial.

Across languages

Translations

12 source translations are retained for this English entry.

  • Finnish: vaikea — not trivial
  • Finnish: hankala — not trivial
  • German: nichttrivial — not trivial
  • Romanian: netrivial — not trivial
  • Ukrainian: нетривіа́льний (netryviálʹnyj) — not trivial
  • Finnish: ei-triviaali — mathematics: not obvious or easy to prove
  • German: nichttrivial — mathematics: not obvious or easy to prove
  • Romanian: netrivial — mathematics: not obvious or easy to prove
  • Finnish: epätriviaali — mathematics: not of the simplest kind
  • German: nichttrivial — mathematics: not of the simplest kind
  • Romanian: netrivial — mathematics: not of the simplest kind
  • Finnish: epätriviaali — computing: needing significant computing power to solve — see also intractable