free from fear or doubt; easy in mind | having or feeling no doubt or uncertainty; confident and assured |
free from danger or risk | certain to occur; destined or inevitable |
not likely to fail or give way | exercising or taking care great enough to bring assurance |
immune to attack; incapable of being tampered with | reliable in operation or effect |
financially safe | physically secure or dependable |
| certain not to fail |
| infallible or unfailing |
| (of persons) worthy of trust or confidence |
| impossible to doubt or dispute |