This is the 570th most frequent Estonian word.
kasuks
"Kasuks" means "for the benefit" or "to the advantage" in English.
'Kasuks' in this sentence is used to indicate a benefit or advantage derived from the decision.
See otsus tuleb kõigile kasuks.
This decision benefits everyone.
In this case, 'kasuks' reflects the helpfulness or utility of the advice given.
Tema nõuanded tulid meie meeskonnale väga kasuks.
His advice was very beneficial to our team.
Here, 'kasuks' denotes something advantageous for the subject's health.