go limp
- flaccidSoft, lacking firmness
- slackAbsence of tautness
- droopHang down limply
- sagSink from weight
- wiltLose vigor, sag
collapse · floppy · loose · relaxed · deflate · boneless · ragdoll · weak · lifeless · noodle · exhausted · faint · slump · surrender · melt · soften · dangle · flag
go limpspring to life
Become suddenly active
perk up · come alive · stand at attention · spring into action · animate