Appreciate

1. v. i. To rise in value. [See note under Rise, v. i.]
2. v. t. To set a price or value on; to estimate justly; to value.
3. v. t. To raise the value of; to increase the market price of; — opposed to depreciate.
4. v. t. To be sensible of; to distinguish.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.