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English word smile comes from Proto-Indo-European *smey-, and later Proto-Germanic *smīlijaną (To smile.)
*smey- (Proto-Indo-European)
to laugh, be glad, wonder
*smīlijaną (Proto-Germanic)
To smile.
*smíla (Old Norse)
smila (Old Norse)
smile (Danish)
To smile.
smilen (Middle English)
smile (English)
(ambitransitive) To have (a smile) on one's face.. (intransitive) To be propitious or favourable; to countenance.. (intransitive) To express amusement, pleasure, or love and kindness.. (intransitive) To look cheerful and joyous; to have an appearance suited to excite joy.. (transitive) To express by smiling. A facial expression comprised by flexing the muscles of both ends of one's mouth, [...]