'stressable' originates from the English word 'stress', which comes from the Middle English 'stresse', derived from the Old French 'estresse', meaning 'narrowness' or 'oppression'.

'stresse' transformed into the modern English word 'stress', and the suffix '-able' was added to form 'stressable'.

Initially, 'stress' referred to 'narrowness' or 'oppression', but over time it evolved to mean 'emphasis' or 'pressure', leading to the adjective 'stressable'.