the compound adjective 'two-fisted' is a modern american english formation, drawing directly from its literal components. the word 'two' originates from old english 'twā', a numeral of ancient germanic lineage, while 'fist' comes from old english 'fȳst', referring to a clenched hand. the suffix '-ed' is used in english to form participial adjectives indicating possession of a quality. the term's evolution from a literal description of using both fists to its figurative meanings of vigorous, hearty, or robust character—and later to describe an oversized drink—showcases a classic pattern of semantic extension, where physical attributes are metaphorically applied to abstract qualities or novel objects.

Structure: two + fist + ed two (old english, numeral), fist (old english, noun meaning 'hand when tightly closed'), ed (old english, suffix forming adjectives from nouns, meaning 'having, characterized by').