The phrase often emphasizes diversity within a category, suggesting a broad range. At the carnival, there were all manner of entertainments to enjoy.
Pro Tip 2/3
Implicit Surprise
Used to imply that the variety or complexity of things is greater than expected. She encountered all manner of difficulties while studying abroad.
Pro Tip 3/3
Slight Formality
The phrase can sound formal or literary; use it in appropriate contexts to enhance expression. He has read all manner of books in his quest for knowledge.