subtilize

English Thesaurus

1. make (senses) more keen (verb.change)

hypernym	:	heighten, sharpen,
definition	:	make (one's senses) more acute (verb.change)

2. make more subtle or refined (verb.change)

hypernym	:	alter, change, modify,
definition	:	cause to change; make different; cause a transformation (verb.change)

3. mark fine distinctions and subtleties, as among words (verb.cognition)

hypernym	:	discriminate, know apart,
definition	:	recognize or perceive the difference (verb.cognition)