Trajan, istrajan, stalan, postojan, neprestan, neprekidan. (lat.)
ETYM Latin permanens, -entis, p. pr. of permanere to stay or remain to the end, to last; per + manere to remain: cf. French permanent. Related to Per-, and Mansion.
1. Continuing or enduring without marked change in status or condition or place; SYN. lasting.
2. Not capable of being reversed or returned to the original condition.