This is the 769th most frequent Hungarian word.
felül
"Felül" means "above" or "on top" in English.
In this sentence, 'felülről' is an adverb formed from 'felül' meaning 'above,' giving the context of observation from a higher position.
Felülről nézve a kilátás gyönyörű.
Looking from above, the view is beautiful.
Here, 'felül' is part of the verb 'felülbírál,' where it denotes a sense of superceding or overruling.
Az ügyvezető felülbírálta a döntést.
The executive overruled the decision.
In this context, 'felül' indicates movement over the top of the fence.