the compound adjective "tuition-free" is a modern formation that transparently combines two established english words. "tuition" entered english from latin via old french, originally carrying a sense of guardianship or protection before specializing to mean the act or cost of instruction. "free" is a native english word of germanic origin, with a core meaning of liberty and absence of constraint, which extended to denote the absence of a financial charge. the compound logically follows the english pattern of adjective-noun combinations (like tax-free, duty-free), where "free" post-modifies the noun to mean "exempt from the specified cost." thus, "tuition-free" literally means "exempt from the fee for instruction," directly reflecting its contemporary definition.

Structure: tuition (fee for instruction) + free (without) tuition: from latin tuitionem (a looking after, guarding, protection), from tueri (to watch over, protect). in english, it evolved to mean "instruction, teaching" and later specifically "the fee paid for instruction." free: from old english freo (exempt from, not in bondage, acting of one's own will), from proto-germanic frijaz. the sense "without cost" developed in english.