wrangle, growl at
啀 centers on hostile vocal conflict: wrangling, arguing, or growling at someone in a confrontational way.
啀 combines 口 (mouth) with 厓, which likely contributes the sound ガイ and may suggest a cliff-like, harsh edge to the vocal action. The exact historical development of 厓 in this character is uncertain.
The mouth 口 on the left and the cliff-like 厓 on the right suggest a mouth that is sharp and harsh, like growling or wrangling from a rocky edge.
For ガイ, imagine a guy growling and wrangling with a sharp mouth: guy -> ガイ, and his harsh words echo like a cliff.