You searched for: “sesquilingual”
sesquilingual
1. The difference between being monolingual and bilingual.
2. A situation in which people know one language and part ("half"?) of another one.
—Coined by William Sherk as seen in his "Introduction" to 500 Years of New Words;
Doubleday Canada Limited, Toronto, Canada; 1983.
This entry is located in the following units: linguo-, lingu-, lingua-, -linguist, -linguistic, -linguistical, -linguistically + (page 7) sesqui- (page 1)