lidless

lid·less  (ldls)

adj.

1. Having no lid or lids.

2. Archaic Watchful; vigilant.

Thesaurus

Adj.	1.	lidless - not having or covered with a lid or lids; "a lidless container" lidded - having or covered with a lid or lids; often used in combination; "milk is left in a large lidded mug"; "heavy-lidded eyes"
	2.	lidless - having no lid; "a lidless container" topless - having no top; "a topless jar"
	3.	lidless - always watchful; "to an eye like mine, a lidless watcher of the public weal"- Alfred Tennyson sleepless alert, watchful - engaged in or accustomed to close observation; "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty"