This is the 287th most frequent Indonesian word.
penuh
Full.
The word 'penuh' is used as an adjective to describe the state of being filled to capacity.
Botol itu penuh dengan air.
The bottle is full of water.
The word 'penuh' is used as part of the phrase 'penuh semangat', where it emphasizes the manner of speaking.
Dia berbicara dengan penuh semangat.
He/she speaks with full enthusiasm.
Here 'penuh' is used metaphorically to describe a feeling or state, associated with emotions and expressions.