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.

• a home truth
• a honeymoon period
• a hope chest
• a hornet's nest
• a horse of a different color
• a horse of another color
• a hostage to fortune
• a hot button
• a hot dog
• a hot potato
• a hot spot
• a house of cards
• a hue and cry
• aim below the belt
• airs and graces
• airy-fairy
• a jack of all trades
• a Jack the Lad
• a Jekyll and Hyde
• a je ne sais quoi
• a job lot
• a Job's comforter
• a Johnny-come-lately
• a judgment call
• a juggling act