Idioms
The language peculiar to a people or to a district, community, or class
Idiom:
to be sure
Meaning:
without a doubt, certainly
Example:
"To be sure it would be better to talk to the store manager rather than the clerk."
List of common idioms, their meanings and examples of their usage in sentences
An idiom is a type of phrase or expression that has a meaning that can't be deciphered by defining the individual words.