squeakier

intransitive verb

1. to make or utter a short, sharp, high-pitched sound or cry
2. Chiefly Brit., Informal to act as an informer; squeal

Origin: ME squeken, prob. akin to ON skvakka, to gurgle

transitive verb

1. to utter or produce in a squeak
2. to cause (a door, etc.) to squeak

noun