The crowd was in a noisy uproar, and no one could hear clearly.
Tips
history
吅 (two mouths side by side) is archaic and not used independently in modern Chinese. It is the 'twin-mouth' element seen inside 哭 (to weep), 嚣 (clamor), and is a variant of 喧 (noisy) and 讼 (to litigate).
register
Archaic and lexicographic only. 吅 appears in old glosses and component breakdowns, not in modern writing.