unwithering

As a noun terms

is .

As an adjective unwithering is

not withering; staying fresh and whole.

As an adverb wither

is (obsolete|or|chiefly in compounds) against, in opposition to.

As a verb wither

is (obsolete) to go against, resist; oppose or wither can be to shrivel, droop or dry up, especially from lack of water.

As an adjective unwithering is

not withering; staying fresh and whole.