Rosh Hashanah or Rosh Hashana/ˌrosh həʹshahnə/ noun

• undersold
• under somebody's feet
• under somebody's thumb
• understaffed
• understand
• understandable
• understanding
• under starter's orders
• understate
• understeer
• understood
• understorey
• understudy
• undersubscribed
• under suspicion
• undertake
• undertaker
• undertaking
• undertenant
• under the auspices of
• under the counter
• under-the-counter
• under the influence
• under the knife
• under the rose