backwardness Synonyms

subnormality slowness retardation mental retardation unfaith untrust arrested development timidity temporization tardiness infantilism slowing shyness reluctancy renitence renitency repression reserve retardment reticence royalism scepsis reluctance mental deficiency sheepishness timidness underdevelopment unpunctuality wildlife refuge lack of knowledge lack of sophistication lack of development developmental delay retiringness reactionism deceleration retardant arrears latecomer betise mongolism brain damage game park old-fashionedness learning difficulties amentia demureness diffidence dilettantism disinclination