gạt
verb

to push aside; to elbow
to level off; to scrape off (said of cereals)
to reject peremptorily; to turn down
(Southern Vietnam) to give security for (debt)
(Southern Vietnam) to dupe; to trick; to cheat

gật
verb

to nod (one's head)

ngặt
adj

strict; stringent; rigorous
(by extension) poor

詰
character

chữ Hán form of cật (“ask, question, interrogate, investigate”).
Nôm form of gạt (“dupe, trick”).
Nôm form of gật (“nod one's head in approval”).
Nôm form of ngặt (“strict, rigorous, impoverished”).