'suddenly-acquired' originates from the combination of 'suddenly' and 'acquired'. 'Suddenly' comes from Middle English 'sodein', from Old French 'soudain', from Latin 'subitaneus', meaning 'unexpected'. 'Acquired' comes from Latin 'acquirere', meaning 'to gain'.

'Suddenly' changed from the Old French word 'soudain' and eventually became the modern English word 'suddenly'. 'Acquired' evolved from the Latin 'acquirere' through Old French 'acquerre'.

Initially, 'suddenly' meant 'unexpected', and 'acquired' meant 'to gain'. Together, they convey the idea of gaining something unexpectedly.