pleonasm
US /ˈpliː.ə.næz.əm/
UK /ˈpliː.ə.næz.əm/
1.
the use of more words than are necessary to express an idea; redundancy
:
•
The phrase 'free gift' is a pleonasm because all gifts are free.
•
The speaker's use of pleonasm made his speech unnecessarily long.