unmerciful
/ˌʌnˈmɚsɪfəl/
adjective
Britannica Dictionary definition of UNMERCIFUL
[more unmerciful; most unmerciful]
:
not having or showing any mercy
:
very harsh or cruel
:
merciless
-
an unmerciful attack
-
unmerciful critics
— unmercifully
/ˌʌnˈmɚsɪfli/
adverb