IPA: //aʊtˈlændɪʃnəs//
KK: /aʊtˈlændɪʃnəs/
The quality of being very strange or unusual, often in a way that is shocking or difficult to accept.
The outlandishness of his ideas made everyone question his sanity.
Outlandishness is formed from "outlandish" (from Old English "ūtlond", meaning foreign or strange) and "-ness" (meaning the state or quality of). The word refers to the quality of being strange or foreign.
Think of something that is 'foreign' or 'strange' ('outlandish') and the '-ness' that indicates a state or quality. This helps you remember that 'outlandishness' means the quality of being strange or foreign.