Dictionary

Very elevated; extending or being far above a base; tall; lofty.

Example: The balloon rose high in the sky.   The wall was high.   a high mountain

Relatively elevated; rising or raised above the average or normal level from which elevation is measured.

Having a specified elevation or height; tall.

Example: three feet high   three Mount Everests high

Elevated in status, esteem, prestige; exalted in rank, station, or character.

Example: The oldest of the elves' royal family still conversed in High Elvish.

In or to an elevated position.

Example: How high above land did you fly?

In or at a great value.

Example: Costs have grown higher this year again.

At a pitch of great frequency.

Example: I certainly can't sing that high.

A national school-leaving examination and university entrance qualification.

To make higher; to raise or increase in amount or quantity.

To ascend.