IPA: /əˈsʌmpsɪt/
KK: /ə'sʌmpsɪt/
A legal term referring to a type of agreement or promise that can be enforced in court, typically not written under seal.
The plaintiff filed an assumpsit to recover damages for the breach of contract.
Assumpsit is derived from the Latin "assumere" (meaning to take up or adopt) and the suffix "-it" (a form indicating a completed action). The term originally referred to a legal action based on a promise or agreement, indicating that one party has taken up an obligation to another.
Think of 'taking up' a promise or obligation — that's what assumpsit means in a legal context.