excrescency

noun

1. An excrescent state or condition; the quality or fact of growing out of something; abnormal or excessive development; an example of this.

2. (obsolete) An exuberant outburst; an extravagance.

3. (obsolete) An excrescence; something excrescent; an outgrowth.

4. (obsolete) An abnormal, morbid, or unsightly outgrowth.