immune to attack; incapable of being tampered with
fill or close tightly with or as if with a plug
make certain of
furnish with battens
financially safe
get by special effort
cause to be firmly attached
free from fear or doubt; easy in mind
assure payment of
free from danger or risk
not likely to fail or give way
lacking in security or safety
not safe from attack
lacking self-confidence or assurance
not firm or firmly fixed; likely to fail or give way
