Here are the possible solutions for key used for this clue clue
Answer
Clue
Relevancy
capslock
Clue
KEY USED FOR THIS CLUE
doesntknowbeans
Clue
Hasn't a clue (oddly enough, since this is a clue)
meta
Clue
Referring to this clue within this clue, e.g.
Definition
(US) concerned with cultural conventions; (of an artistic work) self-referential
asif
Clue
Valley girl's "yeah, right" [IMPORTANT: SEE THE 'NOTE' (above) for key info about this week's puzzle and SEE THE LAST CLUE DOWN for the explanation of last week's puzzle.]
sewed
Clue
Me: "How about the clue 'Used needles,' Ella?" Ella: "No, new needles. You have to use them because it affects the fabric more than you expect."
alt
Clue
PC key next to the Windows key
Definition
a high musical note
ctrl
Clue
Key that's the key to the shortcuts in this puzzle