Synonyms: subtilise, subtilize
Definition: make (senses) more keen
Similar words: sharpen, heighten
Definition: make (one's senses) more acute
Usage: This drug will sharpen your vision
Synonyms: rarefy, sublimate, subtilize
Definition: make more subtle or refined
Similar words: alter, change, modify
Definition: cause to change; make different; cause a transformation
Usage: The advent of the automobile may have altered the growth pattern of the city; The discussion has changed my thinking about the issue
Synonyms: subtilize
Definition: mark fine distinctions and subtleties, as among words
Similar words: know apart, discriminate
Definition: recognize or perceive the difference