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 block'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)
the upper limit
C2 the highest amount or level, or the longest time that something is allowed
Dictionary example:
£45,000 is the upper limit for salaries in this job.
Learner example:
I understand that it will be more expensive than the accom[m]odation I currently have, and I am willing to stretch the upper limit of the rent I can afford to pay. (International English Language Testing System; C2; Hindi)
get/gain the upper hand
C2 to get into a stronger position than someone else so that you are controlling a situation
Dictionary example:
Government troops are gradually gaining the upper hand over the rebels.
Learner example:
He knew that Hooper had got the upper hand and that there was no escape. (Certificate of Proficiency in English; C2; Greek)