if a subject is close to home, it affects you in a personal way, and it can upset you if someone says something unpleasant about it.

His comments about working mothers were a bit close to home for me.

• write off something
• write on the back of a postage stamp
• write someone off
• write something off
• write something on the back of a postage stamp
• write up
• write up something
• writing is on the wall
• writing on the wall
• writ large
• written all over face
• written all over your face
• written in the stars
• wrong side of the tracks
• yank chain
• yank someone's chain
• year after year
• year by year
• year in, year out
• year round
• yellow-bellied
• yellow journalism
• yes man
• you are all over
• you are someone all over