father – bah-bah
Written as bàba or baba
To remember that father is pronounced bah-bah (baba) in Mandarin Chinese, use the following mnemonic:
My father sat down in the barber's (bah-bah) chair, but the barber looked shocked because my dad had no hair.

Tones
Bah (barber) is a 4th tone with \ as an accent.
Associate going to the barbers, a 4th tone, with lowering things like trip or slide down. See Tones and Mnemonics.

The barber cut his hair at a steep, downward angle.
Remember
bah = 4th tone = \