Scantily (adverb)
In a scanty manner; not fully; not plentifully; sparingly
“parsimoniously”
Scantly (adverb)
In a way that is slightly lacking, that is scant of how much should be provided.
“He scantly filled the bag, increasing his profits but getting dissatisified customers.”
Scantly (adverb)
Barely; hardly.
Wiktionary