adverb
especially; particularly; wholeheartedly
Used to emphasize that something is done with special focus or intensity, often in the phrase 立てて~する (to do something especially/particularly). The 'wholeheartedly' nuance appears when the action is done with strong intention.
彼は立てて反対する理由はないと言った。
He said there is no particular reason to oppose it.
立てて用事もなかったので、早めに帰った。
Since I didn't have anything in particular to do, I went home early.