Capable of being forced or compelled; able to be made to happen by applying force or pressure.
From force (Middle English from Old French force, from Latin fortis 'strong') + -able (Latin -abilis, meaning 'capable of'). The suffix -able was added to the verb 'force' to create this adjective in Middle English.
The word 'forceable' reveals how English speakers took the Latin root for 'strength' (fortis) and transformed it into a word about *using* strength to make things happen. It shows how suffix combinations let us endlessly create new words from old roots.
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