кстати

Etymology
, dative singular of.

Adverb

 * 1)  by the way
 * 2) as a matter of fact, for the record, incidentally
 * 3)  useful, helpful, handy, welcome, convenient
 * 4) at the right time, with good timing, in the nick of time, opportunely
 * 5) to the point, apropos, relevant
 * 6)  decently, appropriately, properly
 * 1) to the point, apropos, relevant
 * 2)  decently, appropriately, properly
 * 1)  decently, appropriately, properly
 * 1)  decently, appropriately, properly