忽

忽布

hū bù

hops

飘忽不定

piāo hū bù dìng

to drift without a resting place (idiom)

黑忽忽

hēi hū hū

variant of 黑糊糊[hei1 hu1 hu1]

倏忽

shū hū

(literary) suddenly

忽上忽下

hū shàng hū xià

to fluctuate sharply

忽冷忽热

hū lěng hū rè

now hot, now cold

忽哨

hū shào

to whistle (with fingers in one's mouth)

忽地

hū de

suddenly

忽微

hū wēi

minuscule quantity

忽必烈

hū bì liè

Khubilai Khan (1215-1294), grandson of Genghis Khan 成吉思汗, first Yuan dynasty emperor, reigned 1260-1294

忽忽

hū hū

fleeting (of quick passage time)

忽忽不乐

hū hū bù lè

disappointed and unhappy