The flat tone of the speaker couldn't conceal Davies' distress.
But the easy tone could not conceal the magnitude of the problem that Japan and its trading partners face.
Sands began, his tone almost concealing his disbelief and disgust.
The matter-of-fact tone did not conceal his amazement.
Cliff's tone could not conceal his anxiety.
But the songs rarely sound like other people's Nashville projects, past or present; their homespun tone conceals eccentricities small and large.
The offhand tone concealed a certain pride.
The dark tone of his skin concealed too much.
Hal's tone could not conceal that he was weary to his bones.
If the Master felt either impatience or scorn, his tone concealed it.