Senses
忽 to neglect
(bound form) to neglect; to overlook; to ignore or disregard
忽 suddenly
suddenly; all of a sudden
忽 alternating
Used in repeating patterns to mean "now... now..." or "sometimes... sometimes...", describing rapid alternation between states.
忽 Hu
the family name Hu
忽 [measurement unit]
(bound form) a unit of length or weight representing one hundred-thousandth of a base unit
忽 rapidly
(literary) quickly; rapidly; in an instant