still waters run deep
something that you say which means people who say very little often have very interesting and complicated personalities

[TahlilGaran] Dictionary of Contemporary English ▲

still waters run deep
something that you say which means people who say very little often have very interesting and complicated personalities.
He's quiet and shy, it's true, but still waters run deep.

[TahlilGaran] English Idioms Dictionary ▲

still waters run deep
a quiet person may have much knowledge or deep feelings
The salesman was very quiet but still waters run deep and away from work he was the most knowledgeable and emotional person that you could meet.

[TahlilGaran] English Idioms Dictionary ▲

still waters run deep
Quiet people probably are profound thinkers.
■ A proverb.
He doesn't say much, but he sure looks smart. Well, still waters run deep, isn't that true?

[TahlilGaran] English Idioms Dictionary ▲