Crossword clues for Open, as a tie 4 lettersAnswerClueASEMAsia-Europe meeting, on the eve of which Britain and Germany announced they would open ties with North KoreaUNDOOpen, as a tieKNOTMy least favorite thing, when it comes to opening a brown paper package tied up with stringUNDIDOpened, as a tieASCOTTie sometimes worn with an open collar