incompetent
Translation
incompetent, inept, unskilled
Examples
He is completely incompetent at his job.
He is completely incompetent at his job.
The work was done by an incompetent builder.
The work was done by an incompetent builder.
Grammar Patterns
to be incompetent at ((-ing/sth.)) She is incompetent at dealing with customers.
Similar Words
Synonyms: inept, unskilled, incapable; Antonyms: competent, capable, skilled
Etymology
From 'in-' (not) + 'competent' (having the necessary ability or knowledge).
Memory Tips
Break it down: 'in-' means 'not', so it literally means 'not competent'. Imagine someone who can't compete because they lack skill.