Letters that make pipe up
e, p, i, u are letters that make 'pipe up'
2 possible definitions for 'pipe up'
Under this definition, pipe up is a verb and has the following properties:
'pipe up' can be a type of shout out, scream, cry, squall, hollo, call, shout, yell, holler.
scream, screaming, screech, shriek, shrieking, screeching, shrilling are derivatives of 'pipe up'.
Under this definition, pipe up is a verb and has the following properties: