apologize
詫 centers on expressing regret or fault: apologizing for a mistake or wrongdoing.
詫 combines 言 (speech) with 宅, which likely contributes the sound. The character expresses apology through words.
Words (言) spoken at home (宅) to make amends: when you apologize, you use speech to set things right in a personal space.
For タ, imagine tapping your chest while apologizing: tap -> タ, and your words express regret.
apology
apology
to apologize; to apologise; to make an apology
letter of apology
to make an apology
to apologize sincerely; to apologise sincerely
in-game premium currency given as compensation for bugs, maintenance, etc.; apologems
apology
to apologize; to apologise