Adjectives can be divided into two categories: gradable and ungradable. The former can express different degrees of a given quality. For instance, the sign cold in LIS is gradable because it can be used to describe different degrees of temperature: very cold, pretty cold, a bit cold, etc. Adjectives of this kind can occur in comparative or superlative constructions. On the contrary, ungradable adjectives cannot express different degrees of a given quality. For instance, the sign dead cannot vary in intensity or degree. Adjectives of this kind cannot occur in comparative or superlative constructions.
In this section, we see which strategies can be used to modify gradable adjectives in LIS.