We found one dictionary that defines the word informal speech:

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1. Informal speech: Encyclopedia

Phrases: an informal speech, more... ▸ Words similar to informal speech ▸ Usage examples for informal speech ▸ Idioms related to informal speech ▸ Wikipedia articles (New!) ▸ Words that often appear near informal speech ▸ Rhymes of informal speech ▸ Invented words related to informal speech