though1 S1 W1
used to introduce a statement that makes the main statement coming after it seem surprising, unlikely, or unexpected [= although]:
Though she's almost 40, she still plans to compete.
Pascal went ahead with the experiment even though he knew it was dangerous.
though old/tired etc
The rooms, though small, were pleasant and airy.
old though it is/tired though he was etc
Strange though it may seem, I like housework.
used like 'but' to add a fact or opinion that makes what you have just said seem less definite, less important etc:
I thought he'd been drinking, though I wasn't completely sure.
The offenders were dealt with firmly though fairly.
in a way that makes you think something is true [= as if]:
It looks as though everyone else has gone home.
in a way that might make you think something was true, although you know it is not true [= as if]:
She stared at me as though I were a complete stranger.