Webster's Revised Unabridged Dictionary · 1913

Appreciate

Appreciate ({not transcribed}) , transitive verb

[Latin appretiatus, past participle of appretiare to value at a price, appraise; ad + pretiare to prize, pretium price. Compare Appraise.]

1.
To set a price or value on; to estimate justly; to value.
To appreciate the motives of their enemies. — Gibbon
3.
To raise the value of; to increase the market price of; -- opposed to depreciate. [United States]
Lest a sudden peace should appreciate the money. — Ramsay
4.
To be sensible of; to distinguish.
To test the power of bees to appreciate color. — Lubbock

Appreciate , intransitive verb

To rise in value. [See note under Rise, v. i.] — J. Morse