epenthesis

As nouns the difference between augment and epenthesis

is that augment is (grammar) in some indo-european languages, a prefix e-'' (''a- in sanskrit) indicating a past tense of a verb while epenthesis is (phonetics|prosody) the insertion of a phoneme, letter, or syllable into a word, usually to satisfy the phonological constraints of a language or poetic context.

As a verb augment

is to increase; to make larger or supplement.

As nouns the difference between metathesis and epenthesis

is that metathesis is the transposition of letters, syllables or sounds within a word, such as in ask as /æks while epenthesis is the insertion of a phoneme, letter, or syllable into a word, usually to satisfy the phonological constraints of a language or poetic context.

As nouns the difference between epenthesis and epentheses

is that epenthesis is the insertion of a phoneme, letter, or syllable into a word, usually to satisfy the phonological constraints of a language or poetic context while epentheses is plural of epenthesis.

As a noun epenthesis

is the insertion of a phoneme, letter, or syllable into a word, usually to satisfy the phonological constraints of a language or poetic context.

As an adverb epenthetically is

in an epenthetic manner; by means of epenthesis.