very (adj.)

late 13c., verray "true, real, genuine," later "actual, sheer" (late 14c.), from Anglo-French verrai, Old French verai "true, truthful, sincere; right, just, legal," from Vulgar Latin *veracus, from Latin verax (genitive veracis) "truthful," from verus "true" (source also of Italian vero), from PIE root *were-o- "true, trustworthy." Meaning "greatly, extremely" is first recorded mid-15c. Used as a pure intensive since Middle English.

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Definitions of very from WordNet
very (adv.)
used as intensifiers; `real' is sometimes used informally for `really'; `rattling' is informal;
she was very gifted
he played very well
Synonyms: really / real / rattling
very (adv.)
precisely so;
he expected the very opposite
on the very next page
very (adj.)
being the exact same one; not any other:;
the very man I want to see
on this very spot
the very thing he said yesterday
Synonyms: identical / selfsame
very (adj.)
precisely as stated;
the very center of town