指大词缀，是一些语言中的一种屈折变化，主要接于名词，部分语言有动词的变化形，用来表示「大的」、「强的」之意思的词缀。指大词缀为指小词缀的反义词。

• 指小
• 语感

An augmentative (abbreviated AUG) is a morphological form of a word which expresses greater intensity, often in size but also in other attributes. It is the opposite of a diminutive.

Since overaugmenting something often makes it grotesque, in some languages augmentatives are used primarily for comical effect or as pejoratives.