Ratson

7 clues
Squeals
Exposes
Betrays
Fingers
Gives up
Points the finger at
Fingers, so to speak
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Aaarated
Aaarating
Abelson
Aberrate
Aberration
Aberrations
Abesimpson
Abetsongs
Abhorsonic
Abjuration
Ablepersonality
Abramson
Absonant
Abutson
Accelerate
Accelerated
Accelerates
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Accelerato
Accelerator