1. most inclined to giggle; most prone to light, silly laughter
Usage: superlative form of giggly

Examples

• She was the giggliest person at the sleepover.
• The giggliest students sat in the back row during the comedy show.
• Even at age twelve, Emma remained the giggliest of all her sisters.
• The giggliest moments happened during our family game night.
• He became giggliest when he was nervous or excited.
• The giggliest reaction came from the youngest children in the audience.