1. Excessively flattering, complimentary, or earnest in a way that seems insincere or excessive.
Usage: Most common modern sense; often carries a negative connotation of insincerity.
2. Abundant, copious, or full; complete in extent or scope.
Usage: Archaic or literary; less common in modern usage.

Examples

• The critic's fulsome praise of the mediocre film seemed undeserved.
• She accepted the award with fulsome thanks to everyone involved.
• His fulsome apology did little to repair the damage he had caused.
• The politician received fulsome endorsements from party leaders.
• The review was so fulsome that readers questioned its objectivity.
• He gave a fulsome account of the historical events.