hikikomori /hi-kē-kō-mōˈri or -möˈri/

1. (in Japan) complete withdrawal from society for a prolonged period
2. A person, usu an adolescent male, who does this

• underrun
• under-rung
• underrunning
• underrunnings
• underruns
• undersaid
• under sail
• undersaturated
• under-sawyer
• under-sawyers
• undersay
• undersaye
• undersayes
• undersaying
• undersays
• under-school
• under-schools
• underscore
• underscored
• underscores
• underscoring
• underscrub
• underscrubs
• undersea
• under seal