refine

(v) improve or perfect by pruning or polishing
- refine one's style of writing
fine-tune, polish, down,
(v) make more complex, intricate, or richer
- refine a design or pattern
rarify, complicate, elaborate,
(v) treat or prepare so as to put in a usable condition
- refine paper stock
- refine pig iron
- refine oil
(v) reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities
- refine sugar
rectify,
(v) attenuate or reduce in vigor, strength, or validity by polishing or purifying
- many valuable nutrients are refined out of the foods in our modern diet
(v) make more precise or increase the discriminatory powers of
- refine a method of analysis
- refine the constant in the equation

fine-tune polish down rarify complicate elaborate rectify

refit

refill

refined refined sugar refinement refiner refinery