unstained(adj)

not stained

"An apron keeps his clothing unstained"

unstained, unvarnished(adj)

not having a coating of stain or varnish

unsoiled, unspotted, unstained(adj)

without soil or spot or stain

stainless, unstained, unsullied, untainted, untarnished(adj)

(of reputation) free from blemishes

"his unsullied name"; "an untarnished reputation"

unstained(Adjective)

Not dyed or discolored.

The unstained hardwood floor was pale, but the finish soaked in and made the room seem dark.

unstained(Adjective)

Pure, pristine, clean, immaculate, unadulterated.

She arrived at the chapel for her marriage with unstained honor.