counterterrorism

The word is a modern compound built from established English morphemes. The prefix "counter-", derived from Latin contra, establishes the core concept of opposition. It is attached to "terror", a Latin loanword meaning extreme fear, which in the 20th century became specifically associated with political violence intended to create such fear. The suffix "-ism", of Greek origin via Latin, transforms the concept into a noun denoting a systematic practice or doctrine. Thus, "counterterrorism" logically denotes the organized practice of opposing politically motivated violence designed to instill terror.

Structure: counter (against) + terror (extreme fear) + ism (doctrine or practice) - counter: From Latin contra meaning "against". A prefix indicating opposition or reciprocation. - terror: From Latin terror meaning "great fear, dread, panic". The core noun root. - ism: From Greek -ismos, a suffix forming nouns of action, practice, or doctrine.