Emily Dickinson Lexicon

O-RAC'U-LAR, or O-RAC'U-LOUS, a.

1. Uttering oracles; as, an oracular tongue. The oraculous seer. Pope.
2. Grave; venerable; like an oracle; as, an oracular shade. They have something venerable and oracular in that unadorned gravity and shortness in the expression. Pope.
3. Positive; authoritative; magisterial; as, oraculous expressions of sentiments. Glanville.
4. Obscure; ambiguous, like the oracles of pagan deities. King.