粗笨 is read as そほん (sohon) and means crude.
そほん
sohon
そまつ
crude
そだい
coarse
あらい
あらすじ
outline
そしな
gift given out by companies to customers as a token of gratitude
そあく
そや
rustic
そぼう
rough (behaviour, temperament, etc.)
そこう
crude steel
あらけずり
rough-hewn
そざつ
そだいうんどう
gross motor skill