How do I solve 28 across in Times Cryptic 29573?

Question

Accepted Answer

28 across reads "Actual error that could make dad mad" (7 letters); the answer is LITERAL. It's a double-definition clue: two separate definitions of the same word sit side by side. No wordplay split and no indicators — both halves of the clue define the answer. The full step-by-step breakdown is on this page.

Actual error that could make dad mad (7)

28A — Actual error that could make dad mad (7) — LITERAL