Insufficiently firm (3)
I believe the answer is:
lax
(Other definitions for lax that I've seen before include "Slack, loose" , "Negligent" , "Not taut" , "Loose, careless" , "Not sufficiently careful" .)
I believe the answer is:
lax
(Other definitions for lax that I've seen before include "Slack, loose" , "Negligent" , "Not taut" , "Loose, careless" , "Not sufficiently careful" .)