21 down
Aversion
to
heights
is
never
good
where
always
at
the
summit?
(5)
Aversion to heights is never good where always at the summit? (5)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
The definition is Aversion, meaning a "thing" one dislikes (as in "I have a thing about heights"). The wordplay uses "at the summit" as an acrostic indicator (since this is a down clue, "summit" means the top letter of each word). Taking the initial letters of "to Heights Is Never Good" gives T-H-I-N-G. The word "always" signals using every word in the sequence, and "where" links the definition to the wordplay.