How many letters does the top answer for “the psychological state of being irritated or annoyed” have?

The most common answer is annoyance (9 letters).

Crossword clue: the psychological state of being irritated or annoyed

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

annoyance 9 letters wn-def

the psychological state of being irritated or annoyed

irritation 10 letters wn-def

the psychological state of being irritated or annoyed