river a large natural stream of water (larger than a creek); "the river was navigable for 50 miles"
rejuvenate -
develop youthful topographical features; "the land rejuvenated"
change undergo a change; become different in essence; losing one's or its original nature; "She changed completely as she grew older"; "The weather changed last night"
rejuvenate -
return to life; get or give new life or energy; "The week at the spa restored me"