From G3435; a {stain} that {is} (figuratively) immorality: - filthiness.
Verse
Matrix
1Co 8:7Howbeit there is not in every man that knowledge: for some with conscience of the idol unto this hour eat it as a thing offered unto an idol; and their conscience being weak is defiledG3435.
Rev 3:4Thou hast a few names even in Sardis which haveG3435 not defiledG3435 their garments; and they shall walk with me in white: for they are worthy.
Rev 14:4These are they which wereG3435 not defiledG3435 with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb.