Answer: sloopy

AnswerCrossword Clue
SLOOPY

1965 hit song, "Hang on .."

SLOOPY

The McCoys told her to hang on

SLOOPY

Girl in a 1965 number 1 song title

SLOOPY
"Hang On ..." (1965 chart-topper by the McCoys)
SLOOPY
"Hang On ..."
SLOOPYOne told to hang on, in song