English Lexicon

Brain

/breɪn/
nounCEFR B2 (Upper)Top #500 frequency
Full Thesaurus

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The organ of the body in the head that controls thought, memory, feelings, and activity.

    "She used her brain to solve the complex puzzle."
  2. 2

    A person who is very intelligent or has a lot of knowledge.

    "He is considered the brain behind the innovative project."

Thesaurus & Semantic Spectrum

Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The word 'brain' originates from the Old English 'brægen', which is of uncertain origin but may be related to the Proto-Germanic '*bragnan' and the Proto-Indo-European root '*bhergh-', meaning 'to rise or to be high'. Over centuries, the term evolved to refer specifically to the organ responsible for thought and coordination.

Quick Vocabulary Retention Check

Which of the following is the closest synonym for "Brain"?

Thesaurus & Synonyms Graph

Explore Nuanced Synonyms for "Brain"

Discover exact matches, context-specific alternatives, and antonyms with intensity ratings in the VocabDictionary Thesaurus.

View "Brain" Synonym Map