This is the 303rd most frequent Thai word.
เท
"เท" means "to pour" or "to abandon/dump" depending on context.
The word 'เท' here means 'to pour'.
เขาเทน้ำลงแก้ว
He pours the water into the glass.
The word 'เท' here means 'to devote' or 'to allocate'.
เขาเทเวลาให้งานทั้งหมด
He devotes all his time to work.
The word 'เท' here means 'to be dumped' or 'to be ditched' in a colloquial sense.