incompletely
Definitions
In a manner that lacks some parts, details, or elements; not fully.
To an extent that is partial or unfinished.
Examples
The project was submitted incompletely, missing several key sections of the report.
He answered the survey incompletely, leaving many of the optional questions blank.
The puzzle remained incompletely assembled because two of the pieces were lost.
Synonyms
partially fractionally partly unfinishedly halfway superficially inadequately
Antonyms
completely entirely wholly fully totally perfectly thoroughly