British, very informal!, British & Australian, very informal!

to have sex with someone.

She was having it away with her best friend's husband. (often + with)

• hold court
• hold down
• hold down something
• hold end up
• hold feet to the fire
• hold fire
• hold forth
• hold good
• hold ground
• hold hand
• hold head high
• hold head up high
• hold horses
• Hold horses!
• hold in check
• hold it
• hold its own
• hold off
• hold off something
• hold on
• hold on for dear life
• hold on like grim death
• hold onto
• hold on to for dear life
• hold on to someone for dear life