"sumptuous," 1640s, from Latin lautitia "elegance, splendor, magnificence," from lautus "neat, elegant, splendid," literally "washed," past participle of lavare "to wash" (from PIE root *leue- "to wash").
Laurasia
laureate
laurel
Laurence
Laurentian
lautitious
lav
lava
lavage
lavalier
lavaliere