instill

US: /ɪnˈstɪl/ ,(in stil′)

WordReference Random House Learner's Dictionary of American English © 2025

in•still or in•stil /ɪnˈstɪl/   v. [~ + object (+ in/into + object)] , -stilled, -still•ing or -stil•ling. 

1. to cause (some quality, etc.) to enter the mind of someone, by a long process:
   to instill a sense of decency in his children.

WordReference Random House Unabridged Dictionary of American English © 2025

in•still  (in stil′), v.t. 

1. to infuse slowly or gradually into the mind or feelings;
   insinuate;
   inject:
   to instill courtesy in a child.
2. to put in drop by drop.

• Latin instillāre, equivalent. to in- in-² + stillāre to drip; see distill
• 1525–35

in•still′er, n. 
in•still′ment, n. 
Synonyms

• 1. inculcate, introduce.

WordReference Random House Unabridged Dictionary of American English © 2025

in•stil  (in stil′), v.t., -stilled, -stil•ling. 

1. instill.

Collins Concise English Dictionary © HarperCollins Publishers::

instil, instill / ɪnˈstɪl/ verb ( -stils, -stills, -stilling, -stilled)(transitive)

1. to introduce gradually; implant or infuse
2. to pour in or inject in drops

Etymology: 16th Century: from Latin instillāre to pour in a drop at a time, from stillāre to drip

inˈstiller noun

inˈstilment, inˈstillment, ˌinstilˈlation noun