I'm fast asleep, I'm secure and unhurt.
The argument's valid, I firmly assert.
A body of water, a deafening alert,
a tool used by doctors, I'm found in concerts.
What am I?
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Sound
I'm fast asleep, I'm secure and unhurt.
Sound asleep, Safe and sound.
The argument's valid, I firmly assert.
A sound argument in logic - An argument is sound if and only if it is valid and all its premises are true.
A body of water, a deafening alert,
A sound - a large sea or ocean inlet larger than a bay, deeper than a bight, and wider than a fjord, an alarm sound
a tool used by doctors, I'm found in concerts.
Ultrasound, Sound/ Stereo system in concerts.