This is the 4575th most frequent Dutch word.
deug
"Deug" means "virtue" or "moral quality" in English.
Here, 'deug' is used as a noun meaning 'virtue' or 'quality'.
De deug van de dokter is onmiskenbaar.
The virtue of the doctor is unmistakable.
In this sentence, 'deugt' implies functionality or suitability, often used negatively to denote a lack of quality or reliability.
Dat apparaat deugt niet, het werkt niet goed.
That device is no good; it doesn't work properly.
Here, 'deugt' is used to mean 'to be upright' or 'to meet requirements,' emphasizing moral or qualitative appropriateness.