This is the 35th most frequent Greek word.
όμως
"Όμως" means "however" or "though."
Here, 'όμως' is used as a conjunction to contrast the effort made with the unsuccessful result.
Προσπάθησε πολύ, όμως δεν τα κατάφερε.
He tried hard, but he didn't succeed.
In this case, 'όμως' connects contrasting notions, where the value justifies the cost despite the expense.
Είναι ακριβό, όμως αξίζει τα χρήματα.
It is expensive, but it is worth the money.
'Όμως' introduces a clarification or limitation to the expressed willingness to attend.