check in (with (someone))

to communicate with someone, esp. regularly.

When traveling, I am supposed to check in with my boss at least once a day.

• be in face
• be in fighting trim
• be in fine fettle
• be in full cry
• be in full flow
• be in full spate
• be in full swing
• be in good books
• be in good company
• be in hand
• be in hands
• be in hot water
• be in line
• be in line for
• be in line for something
• be in luck
• be in mint condition
• be in overdrive
• be in over head
• be in over your head
• be in pocket
• be in pole position
• be in Queer Street
• be in safe hands
• be in seventh heaven