painless

the word "painless" is a modern english compound formed from the noun "pain" and the adjective-forming suffix "-less". the root "pain" entered english from old french peine, which itself derived from latin poena, meaning "penalty, punishment", a concept borrowed from ancient greek poinḗ with the same meaning. the suffix "-less" originates from old english -lēas, meaning "devoid of", which is related to the verb lēosan, "to lose". the semantic evolution is direct: the literal combination "devoid of penalty/punishment" shifted to the modern sense of "without physical or mental suffering". this logical construction exemplifies how english creates clear, descriptive adjectives by combining a germanic suffix with a latinate root.

Structure: pain (suffering) + less (without) pain (from latin poena meaning "penalty, punishment", via old french peine; functions as the core noun root) + less (from old english -lēas meaning "devoid of, free from"; functions as a suffix forming adjectives)