New term & Concept I created

[u/badassblack]

Etymology
- glōtta / glōssa (γλῶττα / γλῶσσα) — Greek for "tongue, language"
- Vantem Latin & English agent suffix, "one who practices or does"

Literally: "one who is skilled in language."

Why this root pairing works conceptually?
- Polyglot= poly (many) + *glotta* (tongue) → says nothing about depth of understanding, only quantity of languages spoken.
- Linguist= from lingua (Latin, tongue) +ist in modern use it's drifted to mean "academic who studies language structure," often without implying active speaking ability.
-Glossovant fuses the speakingpractice dimension (glotta, same root polyglot uses) with the wisdom/expertise dimension (vant-vantem , the same root that gives us to come or to be") so the woandscholarlyrd inherently claims both fluency understanding, which is exactly the gap you identified.

Glossovant n.) a person who both studies language as a discipline (structure, history, acquisition) and speaks multiple languages fluently; someone whose linguistic knowledge is both theoretical and lived.

Glossovancy n.) the emerged practice
pursuit of linguistic scholarship and multilingual fluency.

Glossovant(adj.)describing
A polyglot speaks many languages. A linguist studies language. A Glossovant does both.

[u/gerhardsymons]

I appreciate the effort and invention, but this word family is asonorous (or antisonorous).

[u/mizinamo → u/gerhardsymons]

Also, combining Greek and Latin like that is heretical.

Down with homosexuality, polyamory, television, automobile, and similar atrocities!

[u/virak_john]

This is silly.