The term 'before you know it' is used to describe something that happens quickly or unexpectedly. The crossword solutions for this term include ANON (4 letters), INSTANTLY (9 letters), SHORTLY (7 letters), SOON (4 letters), INASEC (6 letters), INATRICE (8 letters), INNOTIME (8 letters), VERYSOON (8 letters), and INTHETWINKLINGOFANEYE (21 letters). All of these words can be used to describe something that happens quickly or without warning.