ipse dixit /ipˈsē dikˈsit or ipˈse dēkˈsit/

1. He himself said it
2. A dogmatic pronouncement
3. Dictum

• sleeked
• sleeken
• sleekened
• sleekening
• sleekens
• sleeker
• sleekers
• sleekest
• sleek-headed
• sleekier
• sleekiest
• sleeking
• sleekings
• sleekit
• sleekly
• sleekness
• sleeknesses
• sleeks
• sleekstone
• sleekstones
• sleeky
• sleep
• sleep apnoea
• sleep around
• sleeper