up ‧ per ‧ most /ˈʌpəməʊst $ -pərmoʊst/ BrE AmE adjective
1 . be uppermost in your mind if something is uppermost in your mind, you think about it a lot because it is very important to you:
A feeling of pity for David was uppermost in her mind.
2 . [not before noun] more important than anything else:
The one word which seems to be uppermost in every discussion is money.
3 . [usually before noun] higher than anything else SYN topmost :
the uppermost windows of the house
—uppermost adverb :
She turned her hand over, palm uppermost.