Untaught is a related term of merciless.
As adjectives the difference between untaught and merciless
is that untaught is not taught while merciless is showing no mercy; cruel and pitiless.
merciless
English
Adjective
(
en adjective)
showing no mercy; cruel and pitiless
Synonyms
* unmerciful
Derived terms
* mercilessness
Anagrams
*