A single tear slid unchecked down his cheek, but his expression remained stoic.
An unchecked infection can lead to severe complications.
The remedy proposed by Descartes is (while not neglecting our duties to others, ourselves and God) to let doubt range unchecked through the whole fabric of our customary convictions.
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Preschool bullying usually begins with name-calling and can escalate into physical violence if left unchecked.
