This is the 109th most frequent Thai word.
แต
"แต" means "but" or "only" in English, depending on context.
'แต' is used as a conjunction to contrast two clauses, indicating a 'but' relation.
ฉันอยากออกไปข้างนอกแต่มันฝนตก
I want to go outside, but it's raining.
'แต' is used here to contrast wealth (money) with the habit of being frugal.
เขามีเงินแต่มักจะประหยัด
He has money, but he is often frugal.
In this sentence, 'แต' introduces a contrasting perspective or unexpected turn.