1. In a manner lacking skill, competence, or expertise; clumsily or awkwardly
He unskillfully attempted to repair the broken vase.
Ele tentou consertar o vaso quebrado desastradamente.
2. Without proficiency or dexterity in performing a task
The painting was executed unskillfully by the amateur artist.
A pintura foi executada sem habilidade pelo artista amador.