Of things: Worthy of consideration; of considerable importance. Obsolete.

Of an immaterial thing, as a quantity, magnitude, distance, etc.: large enough to be perceived or to be worth considering; appreciable…

= estimable, adj.

Worthy of consideration or regard; important, of consequence. In later use passing into A. 5.

U.S. In predicative use: Of some account; deserving of consideration.

deserving to be thought about.