Here are the possible solutions for staircase sound clue
Answer
Clue
Relevancy
creak
Clue
Staircase sound
Definition
to make a squeaking sound
any
Clue
"... card, ___ card" (Last week: The two diagonally hidden 18-letter titles were "Up the Down Staircase" and "Upstairs, Downstairs." The latter answer turned downward at the D of "Downstairs.")