HH

1. His or Her Highness
2. His Holiness

HH or 2H

Very hard (on lead pencils)

• schoolroom
• schoolrooms
• school run
• school runs
• schools
• school ship
• school ships
• school-taught
• schoolteacher
• schoolteachers
• schoolteaching
• schoolteachings
• school term
• school terms
• schooltide
• schooltides
• schooltime
• schooltimes
• school-trained
• schoolward
• schoolwards
• schoolwork
• schoolworks
• school year
• school years