lühendad
Lühendad is not a standard word in Estonian. It does not appear in common dictionaries and is typically considered a nonstandard or erroneous form. The closest standard forms are lühendada, which means to shorten, and lühend, which denotes an abbreviation or shortened form. A form such as lühendab (he/she shortens) or lühenda (shorten!) are the correct verb forms in ordinary usage.
In Estonian, the concept of shortening or abbreviating is expressed with several related terms. Lühend refers
When writing in formal Estonian, it is advisable to use the established vocabulary rather than nonstandard