greek letter between phi and psi: crossword clues

Matching Answer
Confidence
CHI
60%
OMEGA
60%
KAPPA
60%
ETA
60%
BETA
60%
TAU
60%
RHO
60%
THETA
60%
ALPHA
60%
SIGMA
60%
e.g. Greek Cheese
e.g. O?D (Use ? for unknown letters)