ADJ. long | black, dirty | broken, torn | manicured, well-manicured | painted, red, scarlet
VERB + FINGERNAIL cut, manicure, polish | bite, chew | break, tear | dig in She dug her fingernails into my neck. | drag, draw, rake, scrape the sound of fingernails being dragged down a blackboard | examine ‘Actually, I'm leaving you’, she said, continuing to examine her fingernails.
FINGERNAIL + VERB dig in
PREP. under the/your ~s I noticed I had dirt under my fingernails.