subtilize
1.
(
verb
) make more keen, as of the senses
Related Words:
heighten
,
sharpen
2.
(
verb
) mark fine distinctions and subtleties, as among words
Related Words:
discriminate
,
know apart
3.
(
verb
) make more subtle or refined
Synonyms:
rarefy
,
sublimate
Related Words:
alter
,
change
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