Jumpcresc

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A jumpcresc headmate is one that ages in distinct spurts. Their age remains static for a while and then jumps ahead to the next stage. For example, they may remain static most of the time and then suddenly jump ahead one year at the body's birthday, or they may remain at one maturity level and then jump ahead to the next milestone.

Related Terms
Flowcresc may be considered an antonym.

Headmates that age hop may experience similarly abrupt changes in age.