IPA: /ˈɔːtəˌpɛn/
KK: /ˈɔːtəˌpɛn/
A machine that can automatically write or copy a person's signature.
The artist used an autopen to sign hundreds of prints quickly.
The word 'autopen' is formed from 'auto-' (from Greek 'αὐτός', meaning self) and 'pen' (from Latin 'penna', meaning feather or writing instrument). The term 'autopen' refers to a device that writes or signs automatically, thus acting as a self-writing instrument.
Think of 'auto-' meaning self, and 'pen' as a writing tool. This helps you remember that an 'autopen' is a device that writes by itself.
No commonly confused words.