1. superlative form of flutter; most inclined to flutter or move with quick, light, trembling motions
Usage: informal; superlative of 'fluttery'
2. superlative form of flutter; most nervous, anxious, or agitated
Usage: informal; figurative

Examples

• The flutteriest leaves on the tree danced in the breeze.
• She felt flutteriest before her big presentation at school.
• The flutteriest birds in the flock were the young sparrows.
• His heart was flutteriest when he saw her walk into the room.
• The flutteriest fabric made the dress look elegant and light.
• Among all the nervous students, he seemed the flutteriest.