floppiest
/ˈflɒpɪsti/Definitions
1. adjective
most lacking in firmness, stiffness, or vitality; most lacking in strength or resilience
“The floppiest of the bunch failed to make it to the finals.”
2. superlative adjective
most weak or feeble in movement or action
“The floppiest kitten in the litter couldn’t even stand up.”