Encrusted means covered with a hard or jewelled layer. Encrusted with salt, jewel-encrusted, encrusted with barnacles.
It works in two directions: encrusted with jewels is luxury and encrusted with lime is neglect, and the word itself is neutral about which. It takes with. Note crust beneath it, from the Latin for a hard covering.
1adjectiveencrustedCovered with a hard or jewelled layer.
“The old pan was encrusted with burnt fat that no amount of scrubbing would shift.”
encrusted is a quality of covering.
Latin
incrustare
French
incruster
English
encrust
English, today
encrusted
Built from
encrust comes from French incruster, from Latin incrustare, from in- (“in”) + crustare (“to cover with a crust”). by surface analysis, en- + crust.
Etymology from Wiktionary, CC BY-SA