My friend is very unadventurous today.

Bland and unadventurous, full of fat and sugar, and with overabundant servings. Is that a bad thing? You decide.

Staid means sedate, respectable, unadventurous. The antonym would therefore be frivolous, adventurous, or sporting.

The cast of The Nearly Unadventurous Life of Zoe Cadwaulder - 2004 includes: Kelly Heyer as Little Zoe Kassandra Kay as Mrs. Cadwaulder Melanie Lynskey as Zoe Cadwaulder Adam Pilver as Mr. Cadwaulder Kelli Simpkins as Red

afraid, cautious, fearful, frightened, humble, meek, reticent, retiring, shy, timid, unadventurous, prudent, careful, yielding