WordNet sense 1 (impart gradually):

transfuse

WordNet sense 2 (enter drop by drop):

instil

WordNet sense 3 (produce or try to produce a vivid impression of):

impress, ingrain, impress

WordNet sense 4 (teach and impress by frequent repetitions or admonitions):

inculcate, infuse

WordNet sense 5 (fill, as with a certain quality):

impregnate, tincture