The term 'kindergarten' was considered somewhat clinical in the past.

clinical 来自名词 clinic（诊所），加上形容词后缀 -al 构成。本义是"诊所的、临床的"，引申为"不带感情的、客观冷静的"，常用来形容过于理性而缺乏人情味的表达方式或态度。