Difference between Enthusiastic and Overenthusiastic

ENTHUSIASTIC vs OVERENTHUSIASTIC: NOUN

Synonyms Enthusiastic, Fanatical; eager, zealous, devoted, fervent, passionate, glowing; heated, inflamed, visionary. Enthusiastic is most frequently used with regard to a person whose sympathies or feelings are warmly engaged in favor of any cause or pursuit, and who is full of hope and ardent zeal; while fanatical is generally said of a person who has fantastic and extravagant views on religious or moral subjects, or some similarly absorbing topic. See superstition.
Elevated; ardent; inspired by or glowing with enthusiasm: as, the speaker addressed the audience in enthusiastic strains.
Prone to enthusiasm; zealous or devoted; passionate in devotion to a belief or a principle, or the pursuit of an object: as, an enthusiastic reformer.
Filled with or characterized by enthusiasm, or the conceit of special intercourse with God, or of direct revelations or instructions from him.

Ecstatic, Excited, Passionate, Evangelical, Crazy, Warm, Evangelistic, Great, Glowing, Positive, Overenthusiastic, Zealous, Avid, Eager, Ardent

Ecstatic, Excited, Passionate, Evangelical, Crazy, Warm, Evangelistic, Great, Glowing, Positive, Overenthusiastic, Zealous, Avid, Eager, Ardent

However, not all students are enthusiastic about tests.
Enthusiastic ramblings about Enid Blyton and her work!
Publications have been collected by many enthusiastic collectors.
The country was an enthusiastic participant in globalisation.
John is an enthusiastic and diligent software engineer.
Amy Bigelow is one of those enthusiastic parents.
The idea of enthusiastic consent is quite simple.
See for yourself what caused the enthusiastic reviews.
As I read these translations, I at once became more and more enthusiastic about Villon, and less and less enthusiastic about the translations.
He was always enthusiastic about his subject and made me interested and enthusiastic as well.

Where bankruptcies threaten to spread as a result of overenthusiastic speculation, the control functions attempt to shift those costs elsewhere.
Ica in Peru; while a little overenthusiastic with the evidence, Charroux does provoke thoughtabout the importance of such finds.
An overenthusiastic attempt of policemen here to nab pickpockets during the three-day Shoolini fair has landed them in trouble.
Alberto starts playing golf, while his overenthusiastic father embarrasses him during his games.
Overenthusiastic treatment can cause pain, since it aggravates your inflammation (capsular synovitis).
I think they did overstep the mark and got overenthusiastic.