GRE problem (coy vs frank; coy vs devoted)

[Gq5974]

coy <-> frank ?? coy <-> devoted ??

1. coy - affecting shyness or modesty in order to attract masculine interest
she was interested in him, she acted very coy at the dance>
Synonyms coquettish, demure, kittenish
from Merriam dictionary (www.webster.com)

2 : coy - showing reluctance to make a definite commitment

which is coy's antonym??

[Gq5974]

I found solution.

coy <-> frank.