adjective, high·er, high·est.

1.  Having a great or considerable extent or reach upward or vertically; lofty; tall: a high wall.
2.  Having a specified extent upward: The apple tree is now 20 feet high.
3.  Situated above the ground or some base; elevated: a high platform; a high ledge.
4.  Exceeding the common degree or measure; strong; intense: high speed; high color.
5.  Expensive; costly; dear: The price of food these days is much too high.