Adverb: insubstantially ,in-sub'stan-shu-lee
- In a way that lacks substance, solidity, or convincing force
"The student insubstantially argued his point without any supporting evidence"
- In a faint, ethereal, or barely perceptible way
"The ghost insubstantially appeared in the moonlight"
- With minimal material resources or means
"They lived insubstantially in a small apartment with few possessions"