1. superlative form of loose: not firmly or tightly fixed in place; able to move freely
2. superlative form of loose: most relaxed or not strict in standards, rules, or discipline
3. superlative form of loose: fitting most poorly or having the most extra room

Examples

• This screw is the loosest of all the bolts on the machine.
• The coach had the loosest discipline policy in the entire league.
• Of all her clothes, this sweater fits the loosest.
• The rope became even loosest after the rain soaked it.
• His interpretation of the rules was the loosest I’d ever seen.
• The loosest knot came undone first during the storm.