(your) lord and master

humorous

someone who you must obey because they have power over you.

I have to go and cook supper for my lord and master.

• highest rung on the ladder
• high-flier
• high ground
• high jinks
• highly-strung
• high roller
• highways and byways
• hinge on
• hinge on something
• history in the making
• hit a brick wall
• hit a home run
• hit and miss
• hit a nerve
• hit a raw nerve
• hit a snag
• hit a wall
• hit back
• hit below the belt
• hit between the eyes
• hitch wagon to
• hitch wagon to someone
• hitch wagon to something
• hitch your wagon to
• hitch your wagon to someone