To enlarge or increase in size, amount, or degree; to swell; to make bigger; as, to augment an army by reëforcements; rain augments a stream; impatience augments an evil.
- To make (something already developed or well under way) greater, as in size, extent, or quantity: Continuing rains augmented the floodwaters.
- Linguistics To add an augment to.
- To become augmented. See Synonyms at increase.
- Linguistics The prefixation of a vowel accompanying a past tense, especially of Greek and Sanskrit verbs.