Introduction
In degree approaches to gradability (cf., e.g., Kennedy and McNally 2005), adjectives associated with an unbounded scale lacking a maximum endpoint resist modification by maximality degree adverbs, such as completely, fully and 100%, which reference the scalar maximum degree (cf. 1). Adjectives associated with bounded scales can be easily modified by maximizers (cf. 2).
(1) a. Her brother is completely ??tall/??short.
b. The pond is 100% ??deep/??shallow.
c. Max is fully ??eager/??uneager to help.
(2) a. We are fully certain.
b. This product is 100% pure.
c. The figure was completely visible/invisible. (Kennedy and McNally 2005: 355)
Also gradable verbs are distinguished into bounded and unbounded depending on whether they are compatible with a maximizer (Hay et al. 1999; cf. also Piñón 2005; Katz 2008; Kennedy and Levin 2008; Beltrama 2018). In contrast to like, the verb depend is bounded, as shown in (3).
However, a maximizer is not always inconsistent with an unbounded predicate. Apart from the property scale, the scale for interpreting a gradable predicate can be determined by the argument to which the gradable predicate applies. In (4), where completely modification is upper bound-oriented, the maximal value is not determined by the property scale lexicalized by the adjective hot, as the scale of temperature is not closed at the top, but by the extent scale of the adjective’s argument. Completely modification is not available in (4a), where the adjective’s argument outside is not (clearly) bounded, but it is possible in (4b), in which hot applies to the maximal expression face. Completely modifying hot in (4b) gives rise to the interpretation that all of the baby’s face is hot and not to the interpretation that the baby’s face is maximally hot, i.e. that it could not be any hotter (cf. Kennedy and McNally 2005: 366).
maximality adverb can also be compatible with an open-scale expression if the scale can be re-interpreted as bounded in context.