root word: hagdán (ladder, stairs)
A few pedants will argue that the proper translation for hagdanan (three syllables) is “staircase” — however, in common usage, even hagdanan is used to mean a ladder.
They need a ladder.
MGA KAHULUGAN SA TAGALOG
hagdánan: dako ng bahay na kinaroroonan ng hagdan
hagdánan: paraan o kasangkapan sa pagtatamo ng tagumpay