seize
搤 centers on the act of grabbing or taking hold of something firmly: to seize. Its meaning is narrow and concrete.
搤 combines 扌 (hand) with 益, which likely contributes a phonetic element. The exact historical development is uncertain.
The hand radical 扌 beside 益 suggests a hand closing around something beneficial, seizing it tightly.
For アク, imagine seizing a sharp 'ack' sound from a startled person: ack -> アク, as your hand grabs them.