turn a hair, not
Not become afraid or upset, remain calm, as in She didn't turn a hair during the bank robbery. This term, also put as without turning a hair, comes from horse racing. After a race, a horse often has roughened, outward-turned hair. Its figurative use, nearly always in the negative, dates from the late 1800s.
Words nearby turn a hair, not
turmeric paper,
turmoil,
turn,
turn a blind eye to,
turn a deaf ear,
turn a hair, not,
turn a trick,
turn against,
turn around,
turn around one's finger,
turn away