What does big mean?
Big is one of the most fundamental adjectives in English, describing anything of considerable size, extent, quantity, or intensity. Beyond literal dimensions — a big building, a big meal — it extends readily into figurative territory: a big decision carries weight, a big name commands attention, and thinking big means embracing ambition. It can also mark seniority among siblings, as in a big brother, and functions informally as an adverb meaning boldly or ambitiously. Its comparative and superlative forms are bigger and biggest, with the consonant doubled before adding the suffix. Big is casual and versatile rather than precise; writers seeking exactness of measurement usually prefer large, huge, or enormous. Despite its everyday familiarity, its ultimate origins remain genuinely obscure, making this deceptively simple word one of English's small mysteries.
Of considerable size, extent, or intensity; important or significant.
"It was a big day for the whole team."
Comparative 'bigger', superlative 'biggest'.
On a large scale; ambitiously or successfully (informal).
"After years of struggle, she finally made it big."
Colloquial but standard; common in expressions like 'think big' and 'go big'.
Despite being one of the most common words in English, nobody is quite sure where 'big' came from — it just shows up in Middle English around the 13th century, possibly from a Scandinavian source.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of big
The word big first appears in Middle English around the late 13th century, and its origins remain uncertain; many scholars suggest a Scandinavian source, though no direct ancestor has been firmly established. It gradually displaced the older English word 'great' in many everyday contexts over the following centuries. Related forms such as 'bigly' and the noun 'biggie' arose later within English itself.
Word family
Usage notes
Informal register dominates everyday speech; in formal writing, 'large', 'considerable', or 'significant' often replace it for precision. As an adverb ('to think big'), it is colloquial but fully standard. Comparative 'bigger' and superlative 'biggest' double the final consonant.
Don't confuse with
'Large' is more formal and typically describes physical size or quantity, while 'big' is broader and also covers importance, age order among siblings, and abstract scale.