"exercising forbearance or pity; characterized by mercy, giving relief from danger, need, or suffering," mid-14c., from mercy + -ful. The earlier word was merciable (c. 1200). Related: Mercifully; mercifulness.
our merciful king
sought merciful treatment for the captives
a merciful god
merchandizer
merchandizing
merchant
merchantman
Mercia
merciful
merciless
mercurial
mercuric
Mercury
mercury