latch on toidiom
Definition of latch on to
1 : to grab and hold (something) He latched onto her arm and wouldn't let go. —often used figuratively The news media has latched on to the scandal.
2 : to begin using, doing, or enjoying (something) in an enthusiastic way Many companies have latched onto the trend of using consultants. He latched onto music as a way to relax.
3 : to stay close to (someone or something) Soon after she got to the party, some strange man latched on to her and wouldn't go away.