This is the 23rd most frequent Latvian word.
taču
"Taču" means "however," "but," or "after all" in English.
In this sentence, 'taču' works as a conjunction to introduce a contrast between two ideas.
Es gribēju iet ārā, taču sāka līt lietus.
I wanted to go outside, but it started to rain.
Here, 'taču' is used as a questioning particle to seek confirmation from the listener.
Tu esi jau izpildījis uzdevumu, taču?
You've completed the task already, haven't you?
In this instance, 'taču' emphasizes a surprising or unexpected aspect of the situation.