6
instillment
6
instilment
5
infusion
4
implantation
2
brew(noun, concoction)
2
impregnation
2
indoctrination
2
inoculation
2
instil
2
instill
1
conditioning
1
decoction
1
immersion
1
impregnate
1
impression
1
inculcation
1
infiltration
1
inject
1
inspiration
1
marination
11 years ago|1k views|share |citing 
APASmart Define. (2015). instillation thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/instillation/thesaurus/synonyms
ChicagoSmart Define. 2015. "instillation thesaurus" https://smartdefine.org/instillation/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, instillation thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/instillation/thesaurus/synonyms>.
MLASmart Define. "instillation thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/instillation/thesaurus/synonyms>