upper · adjective always before noun /ˈʌp.ər/
upper
B1 at a higher position or level than something else
Dictionary examples:
the upper lip/body
The office building's upper floors were being repainted.
Learner example:
I am doing the upper intermediate level and last summer I was in London [for] three months. (First Certificate in English; B2; Spanish)
have the upper hand
C2 to be in a stronger position than someone else so that you control a situation
Dictionary example:
Government troops are gradually gaining the upper hand over the rebels.
Learner example:
Humans vs. machines - who has the upper hand? (Certificate of Proficiency in English; C2; Spanish)
