1
elderly
1
enfeeblement(noun, drop, fall, failure, deterioration)
1
even-tenored
1
fading away(noun, expression, adjective, drop, decrease)
1
fainting
1
fragmenting
1
full stop
1
geriatric
1
getting on
1
gibbous moon
1
going out(noun, expression, drop, decrease, retreat)
1
going to pieces(expression, idiom)
1
gray
1
greening
1
growing old
1
halcyon
1
halt
1
hoar
1
hoary
1
hushed
11 years ago|6.9k views|share |citing 
APASmart Define. (2015). waning thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/waning/thesaurus/synonyms
ChicagoSmart Define. 2015. "waning thesaurus" https://smartdefine.org/waning/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, waning thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/waning/thesaurus/synonyms>.
MLASmart Define. "waning thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/waning/thesaurus/synonyms>