open up
Open up (phrasal verb) means to start talking freely about feelings, worries or private matters that you had been keeping to yourself. Example: “It took him months to open up about what happened.”
How to use open up
Learner’s notesIn plain EnglishTo start talking about how you really feel — or to make something open.
Informal to neutral. Very common in conversation about mental health.
The emotional sense is intransitive: you open up, you do not open something up about it.
Fill the gap
Can you complete this real example?
It took him months to _____ about what happened.