crazed
Word family
Synonym discussion
Sense: adjective/1
All four words describe someone who has lost normal mental control, but they differ in cause and tone. 'Crazed' suggests a temporary state triggered by an overwhelming emotion (grief, jealousy, pain) and often appears with 'with' or 'by' to name the cause. 'Frenzied' emphasises frantic, fast physical activity — a frenzied rush, a frenzied attack — and does not necessarily imply emotional pain behind it. 'Deranged' is stronger and more clinical, suggesting a serious psychological disturbance that may not be temporary. 'Unhinged' sits between the two: it implies a sudden snapping of mental balance, often from shock or stress, but is less clinical than 'deranged'. For everyday description of someone acting wildly because of strong feelings, 'crazed' is the most direct and dramatic choice. A soldier in battle might grow crazed with fear; a crowd in panic might become frenzied; a person suffering a breakdown could be described as deranged; and a normally calm person who suddenly acts irrationally might be called unhinged.
Etymology
The adjective 'crazed' comes from the verb 'craze', which entered English from Middle English 'crasen' (to break or shatter). That word probably came from Old Norse 'krasa' (to shatter). The original meaning was physical — to break or crack something (a meaning still visible in sense 2 about cracked surfaces). By the late 1700s, the word had developed a metaphorical sense: if a person's mind was 'shattered' by strong emotion or pain, they were described as 'crazed'. This is why the same word can describe both a cracked vase and a grief-stricken person — both are, in a sense, 'broken'.