Suffixes -US, A, UM- Substantives ending in US, A, UM
Substantives in US, A, or UM have a participle meaning, and show us a meaning that is descriptive of the root word. These are formed by ading the suffix to a verbal root.
e.g.
mergo = to plunge
MERG is the base word
MERG-US = 'the one that plunges into the water', i.e. a diver, or a sea-gull.
e.g.
mergo = to plunge
MERG is the base word
MERG-US = 'the one that plunges into the water', i.e. a diver, or a sea-gull.





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