Crossword puzzle clue "backing up sound"

Here are the possible solutions for backing up sound clue

Answer
Clue
Relevancy
beep
Clue
Backing-up sound
Definition
to honk a horn
abet
Clue
Give backing to
Definition
to incite by encouragement and support
acapella
Clue
Without backing, in a way: Var.
acappella
Clue
Lacking backing
Lacking backing, in a way
adhesive
Clue
Tape backing
Definition
sticking
aegis
Clue
Backing
Definition
(Greek) protection, patronage, also EGIS
agin
Clue
Not backing, in the backwoods
Definition
(dialect) again, also AGEN

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