rumpy-pumpy/ˌrumpi ʹpumpi/ noun

• signal
• signal box
• signalize
• signalman
• signal-to-noise ratio
• signatory
• signature
• signature tune
• signboard
• signee
• signet
• signet ring
• significance
• significant
• significant figures
• significant other
• signification
• signify
• sign in
• signing
• sign language
• sign off
• sign on
• signor
• signora