疏於 [－于]

Jyutping so1 jyu1
Pinyin shū yú

Definitions (Wiktionary)

verb
to overlook; to neglect
(syn.) 忽视, 忽略, 忽視, 疏忽, 玩忽

疏於 [－于]

Jyutping
Pinyin shū yú

Definitions (CC-CEDICT)

to fail to pay sufficient attention to
to be negligent in regard to
to be lacking in