doubled
UK[ˈdʌbəld]US[ˈdʌbəld]
adj
made twice as great or twice as many
verb (past tense and past participle of 'double')
to become twice as much or as many; to make something twice as much or as many
Etymology
the word 'doubled' traces its lineage to the latin adjective 'duplus', meaning 'twofold' or 'consisting of two'. this term itself is a compound, formed from 'duo', the numeral for 'two', and the suffix '-plus', denoting 'fold' or 'times'. entering english via old french 'doble', the word evolved into 'double', carrying the core sense of being twice the amount or number. the '-ed' suffix is the standard english inflection for forming the past tense and past participle, thus 'doubled' literally means 'made or became twofold', a meaning that has remained consistent from its latin roots to its modern usage.
Analysis
the word 'doubled' is the past tense and past participle form of the verb 'double'. it is not segmentable into smaller, meaningful morphemes within modern english spelling without altering the root form. the root 'double' originates from the old french 'doble', from latin 'duplus' meaning 'twofold', which is derived from 'duo' (two) and '-plus' (fold).
Examples
the company doubled its profits in the last quarter.
she doubled the recipe to feed the large crowd.
the town's population has nearly doubled in the past twenty years.