PERDURABLE
Source: 566, 567
perdurable. Perdurable, a. very lasting, continuing long
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Per‐dur″a‐ble (pẽr‐dūr″ȧ‐b'l; 277), n. [[Cf. F. perdurable, OE. pardurable. See Perdure.]] Very durable; lasting; continuing long. Chaucer. Shak. — Per‐dur″a‐bly, adv.