1. most covered with or marked by a greasy, sticky, or dirty substance that has been spread thinly
Usage: superlative form of smeary

Examples

• After working on the car engine, his hands were the smeariest I’d ever seen.
• The smeariest windows in the building needed immediate cleaning.
• She chose the cleanest plate from the stack, avoiding the smeariest ones.
• The mechanic’s coveralls were the smeariest after the oil change.
• Among all the paintbrushes, this one looks the smeariest.