SMALLEST, HARDEST

ACROSS

1 To gossip (colloq) (3) 4 Pueblo chamber (4) 5 Unappetising food (4) 6 Incidentally, in texts (abbr) (3)

DOWN

1 Abruptly dump a lover (4) 2 To declare (4) 3 To strike (inf) (3) 4 USSR spy org (abbr) (3)