What does "supervacaneous" mean?

Added above what is needed or necessary; superfluous, redundant.

What is a synonym for "supervacaneous"?

Common synonyms include: redundant.

Pronounced //ˌsuːpəɹvəˈkeɪnɪəs//.

/ˌsuːpəɹvəˈkeɪnɪəs/ adj

adj ·Rare ·Advanced level

Adjective

1
Added above what is needed or necessary; superfluous, redundant. archaic, not-comparable
"It is an awful thing to find your efforts supervacaneous when you are so far away from home and friends, sympathy, and help."

"It is an awful thing to find your efforts supervacaneous when you are so far away from home and friends, sympathy, and help."

From Latin supervacāneus; compare Italian supervacaneo, Portuguese supervacâneo, Spanish supervacáneo.