very
adj.adj. used to emphasize that you are talking about the exact person or thing you mean. It can also mean 'extreme' or 'absolute' when you want to be very clear about a specific point.
adj. used to emphasize the exact identity of a person or thing, or to stress the extreme nature of a situation. Often functions as an intensifier for a noun phrase rather than a qualifier of degree.
This is the very book I was looking for.
The accident happened at the very beginning of the race, causing a massive delay for all the drivers.
By choosing to resign on that very day, she ensured that the board would have no time to find a suitable replacement before the annual general meeting.
From Middle English verray, from Old French verai (“true”), from Early Medieval Latin vērāgus, from Classical Latin vērāx, derived from vērus, from Proto-Italic wēros, from Proto-Indo-European weh₁ros. Distantly cognate with the Old English wǣr (“true”). Over time displaced the use of a number of Germanic words or prefixes to convey the sense 'very' such as fele, full-, mægen, sore, sin-, swith, (partially) wel.
Always placed before the noun it modifies; cannot be used as a predicative adjective after a verb like 'to be'.
The book is very.The book is very good.When used as an adjective for emphasis, 'very' must precede a noun; it cannot stand alone as a complement.