disused

As an adjective disused

is no longer in use.

As a verb discarded is

(discard).

As an adjective disused

is no longer in use.

As a noun scrap is

a (small) piece; a fragment; a detached, incomplete portion or scrap can be a fight, tussle, skirmish.

As a verb scrap is

to discard or scrap can be to fight.

As an adjective disused

is no longer in use.

As a verb abolish is

to end a law, system, institution, custom or practice .

As adjectives the difference between disused and underused

is that disused is no longer in use while underused is used less than normal or desirable.

As a verb underused is

(underuse).

As a noun misuse

is an incorrect, improper or unlawful use of something.

As a verb misuse

is to use (something) incorrectly.

As an adjective disused is

no longer in use.

Disused is a related term of neglected.

As adjectives the difference between disused and neglected

is that disused is no longer in use while neglected is suffering from neglect.

As a verb neglected is

(neglect).

Old is a related term of disused.

As a noun old

is age.

As an adjective disused is

no longer in use.

Antiquated is a related term of disused.

As adjectives the difference between antiquated and disused

is that antiquated is old-fashioned, out of date while disused is no longer in use.

As adjectives the difference between disused and vacant

is that disused is no longer in use while vacant is not occupied; empty.