excrescent

adjective

1. growing abnormally out of something else; superfluous.
2. Phonetics. (of a speech sound) inserted or added as a result of articulatory interaction or impetus, as the t-sound in sense (sents) or against (from Middle English ageynes), without grammatical or historical justification; intrusive; parasitic.

adjective

1. denoting, relating to, or resembling an abnormal outgrowth
2. uselessly added; not essential; superfluous
3. denoting or relating to a speech sound or letter inserted into a word without etymological justification, such as the b in nimble

adj.

mid-15c., from Latin excrescentem (nominative excrescens), present participle of excrescere (see excrescence).

adj.

1. Growing out abnormally, excessively, or superfluously.