Similar words
todavía
aún and todavía are close synonyms for "still, yet," largely interchangeable.
Similar in other languages
Portuguese
ainda
ainda is the Portuguese word for the same thing — both mean "still, yet."
Practice
1 What does aún mean?
still, yet
2 Fill the gap: ___ no ha llegado.
Full sentence: Aún no ha llegado. (He hasn't arrived yet.)
3 Which fingerprint chart matches aún?
aún: neutral register, core frequency, general domain, neutral connotation.