appreciative

As an adjective appreciative

is showing appreciation or gratitude.

As a noun obligation is

the act of binding oneself by a social, legal, or moral tie to someone.

As an adjective appreciative

is showing appreciation or gratitude.

As a noun debt is

an action, state of mind, or object one has an obligation to perform for another, adopt toward another, or give to another.

As an adjective appreciative

is showing appreciation or gratitude.

As a noun recognizer is

a person or device that recognizes.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective appreciative is

showing appreciation or gratitude.

As an adjective appreciative

is showing appreciation or gratitude.

As an adverb appreciatorily is

(obsolete|rare) with appreciation; appreciatively.

As adjectives the difference between appreciative and appreciant

is that appreciative is showing appreciation or gratitude while appreciant is (archaic) appreciative.

As adjectives the difference between appreciative and nonappreciative

is that appreciative is showing appreciation or gratitude while nonappreciative is not appreciative.

As adjectives the difference between appreciative and underappreciative

is that appreciative is showing appreciation or gratitude while underappreciative is insufficiently appreciative; ungrateful.