different between undefined vs mysterious

English

Etymology

un- +? defined

Adjective

undefined (not comparable)

1. Lacking a definition or value.
2. (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.

   The result of division by zero is undefined.

Synonyms

• (lacking a definition or value): indefinite, undefinable; see also Thesaurus:indistinct or Thesaurus:vague

Antonyms

• defined

Translations

English

Etymology

From Middle French mystérieux.

Pronunciation

• Rhymes: -??ri?s
• (Received Pronunciation) IPA^(key): /m??st???i.?s/
• (General American) IPA^(key): /m??st??i.?s/

Adjective

mysterious (comparative more mysterious, superlative most mysterious)

1. Of unknown origin.

   Synonym: untraceable

2. Having unknown qualities.

   Synonyms: esoteric, uncertain, undefined; see also Thesaurus:mysterious

   Hyponyms: anonymous, faceless, unexplored, unnamed, long-mysterious
3. Difficult to understand.

   Synonyms: see Thesaurus:incomprehensible

4. Deliberately evasive or enigmatic.

   Synonyms: see Thesaurus:covert

Derived terms

• mysteriously
• mysteriousness

Related terms

• mystery

Translations