Obsolescent

Obsolescent is an adjective used to describe something that is in the process of becoming obsolete or is gradually falling out of use. It is applied to technologies, practices, standards, or institutions that are no longer current but have not completely disappeared.

Etymology: The term derives from obsolescence, from Latin obsolescere meaning to grow obsolete, with the English suffix -escent meaning becoming or growing. It is related to the noun obsolescence and the adjective obsolete.

Usage: Obsolescent emphasizes the transitional phase toward obsolescence rather than outright disappearance. It is commonly used in academic, industry, and policy discussions about technology, infrastructure, regulations, or methodologies that are being phased out or superseded. The word carries a neutral connotation, avoiding the stronger implication of being entirely unusable.

Examples: A software standard may become obsolescent as newer protocols emerge; obsolescent hardware requires replacement to maintain compatibility or security. In cultural contexts, certain traditional practices may be obsolescent in modern societies while still maintained in specific communities.

See also: Obsolescence; Obsolete; Replacement cycle; Technology lifecycle.