bow with arms folded, come together, assemble
揖 centers on a formal gesture of respect or gathering: bowing with arms folded, and by extension coming together or assembling people.
揖 combines 扌 (hand) with 咠, which likely contributes the sound and relates to gathering or whispering, suggesting a hand gesture of respectful assembly.
The hand radical 扌 beside 咠 (which looks like an ear 耳 and mouth 口 together) suggests a hand gesture accompanying a whispered gathering or a formal bow.
For イツ, imagine an 'eats' banquet where everyone assembles and bows before eating: 'eats' -> イツ, and the hand gesture shows respect.
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