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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Received-Pronunciation:/ˈaɪnstaɪni/
Received-Pronunciation:/-ʃtaɪ-/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˈaɪnˌstaɪni/
1
adj
Meaning 1
Characteristic of or resembling Albert Einstein, or his theory of relativity; Einsteinian.
Definition source: English Wiktionary via Wiktextract
Usage: informal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: non-Einsteinian, un-Einsteinian
2
adj
Meaning 2
Characteristic of or resembling Albert Einstein, or his theory of relativity; Einsteinian.
Highly intelligent; brilliant.
Definition source: English Wiktionary via Wiktextract
Usage: informal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: non-Einsteinian, un-Einsteinian
3
adj
Meaning 3
Characteristic of or resembling Albert Einstein, or his theory of relativity; Einsteinian.
Of hair, sticking out wildly.
Definition source: English Wiktionary via Wiktextract
Usage: informal
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: non-Einsteinian, un-Einsteinian
History
Etymology
[Alt: Portrait of Albert Einstein] From Einstein + -y (suffix forming adjectives with the sense ‘having the quality of’), referring to the German-born theoretical physicist Albert Einstein (1879–1955).
Across languages
Translations
1 source translations are retained for this English entry.