The term HAS AT can be found in two crossword solutions: ASSAILS and TIESINTO. ASSAILS is a verb meaning to attack or criticize someone or something, usually with strong language. It is derived from the Latin word 'assilire, ' which means to leap upon. TIESINTO is a verb meaning to connect or relate to something else. It is derived from the phrase 'tie into, ' which is used to describe connecting one thing to another.