How do I solve 10 across in Times Cryptic 3297?

Question

Accepted Answer

10 across reads "I’m leaving, primarily to avoid those annoyances" (2-2 letters); the answer is TATA. It's a letter-selection clue: take specific letters from a longer source. 'First of' means the opening letter, 'extremely' means first + last, 'regularly' means every other letter, 'oddly' / 'evenly' means odd or even positions. The full step-by-step breakdown is on this page.

I’m leaving, primarily to avoid those annoyances (2-2)

10A — I’m leaving, primarily to avoid those annoyances (2-2) — TATA