though

Từ điển Oxford Advanced Learner 8th

though conjunction, adverb BrE [ðəʊ] NAmE [ðoʊ]
conjunction
1. despite the fact that
Syn: ↑although
• Anne was fond of Tim, though he often annoyed her.
• Though she gave no sign, I was sure she had seen me.
•His clothes, though old and worn, looked clean and of good quality.
•Strange though it may sound, I was pleased it was over.
2. used to add a fact or an opinion that makes the previous statement less strong or less important
• They're very different, though they did seem to get on well when they met.
• He'll probably say no, though it's worth asking.
see as though at ↑as _conj., even if/though at ↑even _adv.

Word Origin:
Old English thēah, of Germanic origin; related to Dutch and German doch; superseded in Middle English by forms from Old Norse thó, thau.

Which Word?:
although / even though / though
You can use these words to show contrast between two clauses or two sentences. Though is used more in spoken than in written English. You can use although, even though and though at the beginning of a sentence or clause that has a verb. Notice where the commas go: ▪ Although/Even though/Though everyone played well, we lost the game. ◇ ▪ We lost the game, although/even though/though everyone played well.
You cannot use even on its own at the beginning of a sentence or clause instead of although, even though or though: Even everyone played well, we lost the game.
 
adverb used especially at the end of a sentence to add a fact or an opinion that makes the previous statement less strong or less important
• Our team lost. It was a good game though.
• ‘Have you ever been to Australia?’ ‘No. I'd like to, though.’

Word Origin:
[though] Old English thēah, of Germanic origin; related to Dutch and German doch; superseded in Middle English by forms from Old Norse thó, thau.

Which Word?:
although / even though / though
You can use these words to show contrast between two clauses or two sentences. Though is used more in spoken than in written English. You can use although, even though and though at the beginning of a sentence or clause that has a verb. Notice where the commas go: ▪ Although/Even though/Though everyone played well, we lost the game. ◇ ▪ We lost the game, although/even though/though everyone played well.
You cannot use even on its own at the beginning of a sentence or clause instead of although, even though or though: Even everyone played well, we lost the game.