 (H) is a rather controversial—intuitively, there are many synonyms that are not everywhere intersubstitutable. For example, ‘likely’ and ‘probable’ mean pretty much the same even though ‘Jacques is likely to leave’ is meaningful while ‘Jacques is probable to leave’ is arguably not; cf. Gazdar (1985:  32).[12]  And—more controversially—there might be synonyms that are almost nowhere intersubstitutable: ‘quick’ and ‘quickly’ are good candidates.