[countable] a phrase or an idea that has been used so often that it no longer has much meaning and is not interesting (Oxford)
a saying or remark that is very often made and is therefore not original and not interesting (Cambridge)
It has become a cliche to say that Prague is the most beautiful city in Europe. (Oxford)
My wedding day - and I know it's a cliche - was just the happiest day of my life. (Cambridge)
cliche to say that Prague is the most beautiful city in Europe
wedding day - and I know it's a cliche
Stale saying
Old story
Fresh
New
Cliche