deceive, delude
詑 centers on using words to mislead: deceiving or deluding someone through speech.
詑 combines 言 (speech) with 它, which likely contributes the sound and may relate to a bending or misleading quality. The exact historical development is uncertain.
Words (言) that bend the truth like a snake (它) — imagine a forked tongue speaking lies to deceive.
For イ, picture an ear (耳, みみ) listening to a deceptive speech: the first sound of 耳 (み) is close to イ, but to remember the exact reading, think of an 'e' (イ) as in 'e-lie' — a lie that deceives.