Historia

retard

[1]	slow (down/up) , hold up/back , set back , hinder , impede , delay , keep back , stall , thwart , balk , block , restrict , hold in check , frustrate , interfere with
[2]	check , delay
[3]	decelerate , slow , slow down , slow up

[1]	idiot , imbecile , cretin , moron , changeling , half-wit
[2]	(Offensive and Derogatory) idiot , moron , fool , imbecile , dunce , (Slang) (Mainly US/Canadian) jerk