draw tight, tighten, confine
When you are astringent towards someone, you speak to or write about them in a critical and hurtful manner.
When you are constrained, you are forced to do something or are kept from doing it.
Stringent measures or rules are strict, severe, and controlled in a very tight fashion.
Someone who is unrestrained is free to do as they please; they are not controlled by anyone but themselves, which can lead to excessive behavior.
When someone has restraint, they show self-control or self-discipline, which provides limits to what they do.
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