The Vietnamese word "quẫn trí" refers to a state of being mentally confused, overwhelmed, or in a state of panic. It can be thought of as becoming muddle-headed, where someone is unable to think clearly due to stress, anxiety, or difficult situations.
In more advanced contexts, "quẫn trí" can be used to describe someone who is not only confused but may also act irrationally or make poor decisions because of their overwhelmed state.
In summary, "quẫn trí" is a useful word to describe a state of mental confusion or panic.