We found one dictionary that defines the word hot under the collarp:

General (1 matching dictionary)

1. hot under the collarp: Rhymezone

Definitions from WordNet (hot under the collarp) ▸ adjective:  very angry ▸ Words similar to hot under the collarp ▸ Usage examples for hot under the collarp ▸ Idioms related to hot under the collarp ▸ Wikipedia articles (New!) ▸ Popular nouns described by hot under the collarp ▸ Words that often appear near hot under the collarp ▸ Rhymes of hot under the collarp ▸ Invented words related to hot under the collarp