anāyuṣya

 "Anāyuṣya" is a Sanskrit adjective meaning "not imparting long life" or "fatal to long life," derived from the negative prefix and the root related to lifespan.

Meaning

The term anāyuṣya (अनायुष्य) is an adjective used in Sanskrit texts to

describe something that is harmful to life or fatal. It literally refers to

a person, object, or influence that does not promote 

longevity

Sanskrit Dictionary+3

 . For instance, in classical Sanskrit

literature, it may describe poison, harmful acts, or malevolent forces 

that are "fatal to long life."

Etymology

The etymology of anāyuṣya comes from two parts:

an- (अन्): a prefix meaning "not" or "without," which negates the idea

 of the root word.

āyuṣya (आयुष्य): derived from āyus (आयुस्), meaning "life," "longevity," 

or "duration of life." The suffix -ya forms adjectives or nouns related

 to the concept.

Combining these, an-āyuṣya literally means "not conducive to life"

or "life-diminishing"

Usage in Literature

• Sanskrit dictionaries and lexicons like Monier-Williams list anāyuṣya
• as mfn. (masculine, feminine or neuter adjective), indicating its 
• grammatical flexibility when describing nouns of different genders 

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• In Hindu and Buddhist textual contexts, the word often appears 
• in discussions regarding life span, harmful substances, or 
• conditions that shorten life

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In summary, anāyuṣya is a descriptive term in Sanskrit referring to 

anything considered fatal, harmful to longevity, or not promoting life, 

rooted in the prefix "an-" (not) and "āyuṣya" (life-related). Its use

spans grammatical genders and is found in both secular and religious 

Sanskrit literature.