pasvorto

This one comes apart cleanly, and it is a pleasure when they do.Pasi is to pass and vorto is a word, so a pasvorto is the word that lets you pass. Main root last, pas- qualifying it, and the joining is bare because sv needs no help. English password and German Passwort are the same build, and the sense is older than computing: it is the word you gave the sentry at the gate.

Note the shortened root. The compound is pas-vorto, not pasi-vorto or paso-vorto: a verb entering a compound leaves its -i behind and contributes the bare root. That is the same rule as in skribotablo, a writing desk, and lavmaŝino, a washing machine, and it is why compounds come out so much shorter than the words they are made of.

The vocabulary that clusters round it. Uzantonomo is a username, ensaluti is to log in and elsaluti to log out, konto is the account, and ŝlosilvorto is a keyword rather than a password, so do not swap them. Pasvortfrazo is a passphrase. If you are typing any of this on a keyboard that will not make Esperanto's hatted letters, that is a separate problem with a separate answer, and the article on typing Esperanto is where it is worked through: the x-system this site's URLs use is exactly why the page for viŝi lives at /esperanto/words/visxi.

A small warning about a false friend. Paso on its own is a passing or a step, and a passport is a pasporto, which is a different compound built on the same root. Neither is a pasvorto.