SUBTILIZE
subtilize, subtilise
(verb) make (senses) more keen
rarefy, sublimate, subtilize
(verb) make more subtle or refined
subtilize
(verb) mark fine distinctions and subtleties, as among words
Source: WordNet® 3.1
Verb
subtilize (third-person singular simple present subtilizes, present participle subtilizing, simple past and past participle subtilized)
(transitive) To make subtle; to make thin or fine; to make less gross or coarse.
(transitive) To refine; to spin into niceties.
(intransitive) To use subtle arguments or distinctions.
Source: Wiktionary
Sub"til*ize, v. t. [imp. & p. p. Subtilized; p. pr. & vb. n.
Subtilizing.] Etym: [L. subtiliser.]
1. To make thin or fine; to make less gross or coarse.
2. To refine; to spin into niceties; as, to subtilize arguments.
Nor as yet have we subtilized ourselves into savages. Burke.
Sub"til*ize, v. i.
Definition: To refine in argument; to make very nice distinctions. Milner.
Source: Webster’s Unabridged Dictionary 1913 Edition