refine

As verbs the difference between refine and rejuvenate

is that refine is while rejuvenate is to render young again.

As verbs the difference between retain and refine

is that retain is to keep in possession or use while refine is .

As verbs the difference between refine and simplify

is that refine is while simplify is to make simpler, either by reducing in complexity, reducing to component parts, or making easier to understand.

As verbs the difference between amplify and refine

is that amplify is to render larger, more extended, or more intense, and the like;—used especially of loudspeakers, telescopes, microscopes, etc while refine is .

As a verb refine

is .

As an adjective undefined is

lacking a definition or value.

As verbs the difference between refine and found

is that refine is while found is (find) or found can be to begin building or found can be to melt, especially of metal in an industrial setting.

As a noun found is

food and lodging, board or found can be a thin, single-cut file for comb-makers.

As verbs the difference between replace and refine

is that replace is while refine is .

As verbs the difference between develope and refine

is that develope is while refine is .