Upswing rhymes with:
swing, schwing, swing, thwing, wing, beijing, bing, bring, chang-ming, ching, chongqing, cling, ding, dring, fling, ging, ginting, gring, hing, ing, jing, king, kling, kring, kwok-shing, ling, lyng, mei-ling, ming, ning, peking, ping, pring, qing, qingming, ring, ringe, schwing, shing, sing, singh, sling, spring, sting, string, swing, thing, thwing, ting, unring, wing, wring, xiaoping, xing, yenching, ying, zing
Upswing sounds like:
upcoming, upjohn's, upsizing, upswings