1. Without explicit official permission
   "unsanctioned use of company cars"

See also: unofficial

• skip over
• skip rope
• skip town
• skip-bomb
• skipjack
• skipjack tuna
• skipper
• skipping rope
• skirl
• skirmish
• skirmisher
• skirr
• skirret
• skirt
• skirt chaser
• skirt of tasses
• skirting
• skirting board
• skit
• skite
• skitter
• skittery
• skittish
• skittishly
• skittishness