This is the 114th most frequent Hungarian word.
legalább
"At least."
Here, 'legalább' means 'at least,' establishing a minimum quantity.
Legalább öt órát alszik minden éjjel.
He sleeps at least five hours every night.
In this sentence, 'legalább' implies doing something if not more.
Tegyük meg legalább az első lépést!
Let us take at least the first step!
The word 'legalább' here is used to suggest a minimal acceptable action.