RETARDATE
Meaning of RETARDATE in English
/ri tahr"dayt/ , n.
someone who is retarded in some way, as educationally or mentally; retardee.
[ 1955-60; prob. back formation from RETARDATION ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012