hubbub

n [sing, U] (a) loud confused noise, eg of many voices; din 喧嚷; 喧闹; 嘈杂声. (b) disturbance; uproar 混乱; 骚乱; 闹哄哄.

How about?, How come...?, how do you do, how long, howdah, however, howitzer, howl, howler, howling, hoyden, hoydenish, hp (also HP), HQ, hr, HRH, hub, hub-cap, Hubble, hubble-bubble, hubby, hubris, huckleberry, huckster, huddle, hue, huff, huffily, huffish, huffy, hug, huge, huge (great) amount of, hugely, hugeness, hugger-mugger, Hugo Wolf, Huguenot, huh, hulk, hulking,