From Wiktionary, the free dictionary
From ត្រិះ (treh, “to think”) with infixed -VN- (processive), ultimately from រិះ (rih).
តំរិះ • (tɑmreh)
- reflection, consideration
- analysis, study
- knowledge, intelligence
តំរិះ • (tɑmreh) (abstract noun ការតំរិះ)
- (royal) to think, decide