Heceleme
 un·re·hearsedTürkçe nasıl söylenir
 ınrihırstEş anlamlılar
 ad-lib, 
extemporaneous, 
from the hip, 
impromptu, 
improvised, 
impulsive, 
not rehearsed, 
off the cuff, 
off the top of one’s head, 
spur of the moment, 
unpracticed, 
unpreparedTelaffuz
 /ənrēˈhərst/ /ənriːˈhɜrst/
Etimoloji
  (prefix.)  Middle English, from Old English un-, on-, alteration of and- against; more at ANTE-.