INSTILL

impregnate, infuse, instill, tincture

(verb) fill, as with a certain quality; “The heavy traffic tinctures the air with carbon monoxide”

inculcate, instill, infuse

(verb) teach and impress by frequent repetitions or admonitions; “inculcate values into the young generation”

impress, ingrain, instill

(verb) produce or try to produce a vivid impression of; “Mother tried to ingrain respect for our elders in us”

instill, instil

(verb) enter drop by drop; “instill medication into my eye”

instill, transfuse

(verb) impart gradually; “Her presence instilled faith into the children”; “transfuse love of music into the students”

Source: WordNet® 3.1

Etymology

Verb

instill (third-person singular simple present instills, present participle instilling, simple past and past participle instilled)

To cause a quality to become part of someone's nature.

To pour in (medicine, for example) drop by drop.

Source: Wiktionary

In*still", v. t. [imp. & p. p. Instilled; p. pr. & vb. n. Instilling.] Etym: [L. instillare, instillatum; pref. in- in + stillare to drop, fr. stilla a drop: cf. F. instiller. See Distill.] [Written also instil.]

Definition: To drop in; to pour in drop by drop; hence, to impart gradually; to infuse slowly; to cause to be imbibed. That starlight dews All silently their tears of love instill. Byron. How hast thou instilled Thy malice into thousands. Milton.

Syn.

– To infuse; impart; inspire; implant; inculcate; insinuate.

Source: Webster’s Unabridged Dictionary 1913 Edition