uncertain

"a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other";

"an uncertain recollection of events"; "a gun with a rather uncertain trigger";

"she spoke in no uncertain terms";

"uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers";

"an uncertain future"; "a manuscript of uncertain origin"; "plans are still uncertain"; "changes of great if uncertain consequences"; "without further evidence his story must remain uncertain";

"his doom is as yet unsealed";

"everything is uncertain about the army"; "the issue is uncertain";