obsolescent

As a noun initialism

is a term formed from the initial letter or letters of several words or parts of words, but which is itself pronounced letter by letter.

As an adjective obsolescent is

in the process of becoming obsolete, but not obsolete yet.

As adjectives the difference between reduced and obsolescent

is that reduced is made smaller or less, resulting from reduction while obsolescent is in the process of becoming obsolete, but not obsolete yet.

As a verb reduced

is (reduce).

As adjectives the difference between obsolescent and undefined

is that obsolescent is in the process of becoming obsolete, but not obsolete yet while undefined is lacking a definition or value.

Phaseout is likely misspelled.

Phaseout has no English definition.

As an adjective obsolescent is

in the process of becoming obsolete, but not obsolete yet.

As adjectives the difference between obsolescent and deprecated

is that obsolescent is in the process of becoming obsolete, but not obsolete yet while deprecated is strongly disapproved of.

As a verb deprecated is

past tense of deprecate.

As an adjective obsolescent

is in the process of becoming obsolete, but not obsolete yet.

As a noun read is

thing or read can be star.

As a noun taxonomy

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

As an adjective obsolescent is

in the process of becoming obsolete, but not obsolete yet.

As an adjective obsolescent

is in the process of becoming obsolete, but not obsolete yet.

As a noun finochia is

.

As adjectives the difference between obsolescent and reparate

is that obsolescent is in the process of becoming obsolete, but not obsolete yet while reparate is (obsolescent|rare) restored]] to a state of good [[repair#noun|repair; returned to working order.

As a verb reparate is

; restore to proper condition or reparate can be make reparation(s).