I am currently somewhat unsure of how to use this electronic device.
The lost hiker had wandered astray from the marked trail and was unsure of how to get back to safety.
Slaves escaping through the Underground Railroad were unsure of their destiny.
unsure
The students were unsure of how to interpret the abstract artwork.
Sure. "The explorer explored the wilderness. Unsure if what he'll find."
Your destiny is unsure.
"While her answers were intellectual and sincere, her demeanor was timid and unsure." "I was timid at first, but once I got to know everyone, I was much more comfortable."
Can you use the word concluding in a sentence? Done.
You can use the word Truss in a sentence like this.
The professor's terse response left the students unsure of what to do next.
Just use it! Or do you mean, can you use the word beheld in a sentence.