1. With a fair or plausible appearance.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• subciously,
• perciously,
• suspeciously,
• supciously,
• spaciousl,
• supiciously,
• spasiously,
• apeciously,
• zpeciously,
• xpeciously,
• dpeciously,
• epeciously,
• wpeciously,
• soeciously,
• sleciously,
• s-eciously,
• s0eciously,
• spdciously,
• dieciously,
• Speciosaty

• spaciousness,
• species,
• spacious,
• speciousness,
• sphecius,
• spaciously,
• specious.

The adjective form of "speciously" is "specious".

The plural form of the word "speciously" is "speciouslies".

The singular form of "speciously" is "specious"