dainty: [13] In origin, dainty is the same word as dignity. The direct descendant of Latin dignitās in Old French was daintie or deintie, but Old French later reborrowed the word as dignete. It was the latter that became English dignity, but daintie took a route via Anglo-Norman dainte to give English dainty. At first it meant ‘honour, esteem’, but before a century was up it had passed through ‘pleasure, joy’ to ‘something choice, luxury’. The first record of its adjectival use comes in the 14th century, when it meant ‘choice, excellent, delightful’; this soon developed to ‘delicately pretty’. => dignity
dainty (n.)
c. 1300, "excellence, elegance; a luxury," from Old French deintie (12c.) "price, value," also "delicacy, pleasure," from Latin dignitatem (nominative dignitas) "greatness, rank, worthiness, worth, beauty," from dignus "worthy" (see dignity).
dainty (adj.)
c. 1300, deinte, "delightful, pleasing," from dainty (n.). Meaning evolved in Middle English to "choice, excellent" (late 14c.) to "delicately pretty." Related: Daintiness.