| Lustral 1. (a.) Of or pertaining to, or used for, purification; as, lustral days; lustral water. 2. (a.) of or pertaining to a lustrum. Thesaurus Entries abstergent, apologetic, ascetic, atoning, cathartic, cleaning, cleansing, compensational, compensatory, depurative, detergent, diuretic, emetic, expiatory, expurgatory, lustrational, lustrative, penitential, piacular, propitiatory, purgative, purgatorial, purging, purificatory, purifying, reclamatory, recompensing, redeeming, redemptive, redressing, reparative, reparatory, repentant, repenting, restitutional, restitutive, restitutory, righting, satisfactional, squaring |