sound argument

noun

UK /saʊnd ˈɑːɡjʊmənt/

US /saʊnd ˈɑːrɡjəmənt/

A sound argument is a set of ideas that is true and makes sense.

Her sound argument convinced everyone to recycle more.

SYNONYMS

valid argument logical argument strong argument reasonable argument well-founded argument

RELATED WORDS

logic reasoning evidence premise conclusion

OTHER MEANINGS

2. An argument in logic whose premises are all true and whose conclusion follows necessarily from them.

The philosopher showed that the syllogism was a sound argument because every premise was true.

3. A discussion or disagreement that is calm and free of anger.

They had a sound argument about the budget and still shook hands afterward.

4. A reason or case that is well supported by facts and therefore persuasive.

The lawyer presented a sound argument backed by clear evidence.