Hook up with is a phrase that means to establish a connection or relationship with someone. The crossword solutions for this phrase are EQUIP, JOIN, MEET, and tieto. EQUIP is a verb meaning to provide with the necessary items for a particular purpose. JOIN is a verb meaning to come together and form a connection or union. MEET is a verb meaning to come into the presence of someone or something. Tieto is a Finnish word meaning to connect or link.