pro ‧ ver ‧ bi ‧ al /prəˈvɜːbiəl $ -ɜːr-/ BrE AmE adjective
1 . the proverbial something used when you describe something using part of a well-known expression:
The store had everything including the proverbial kitchen sink.
2 . relating to a proverb:
a proverbial expression
3 . well known by a lot of people:
His modesty is proverbial.
—proverbially adverb