It was a challenge to find the penny in the haystack.
The word "overweening" is an adjective. An example of a sentence using the word would be: The student was loud, arrogant, and overweening; he proved to be a challenge for his teachers.
To impugn is to challenge, oppose or attack as being false.Usage:I impugn you.'I impugn your belief that the world is flat'
The girl is very challengeable as she is very competitive
Since that is not a word I would not attempt to use it in a sentence.
You just did use the word colonize in a sentence.
Janet always enjoyed a challenge.The sports challenge looked good this year.I will challenge your decision.
the pioneers faced the challenge of settling the frontier with unyielding courage
how would you use the word finished in a command sentence
1. you did just use that word in a sentence 2. if a doctor would use the word tumor in a sentence they would probably say "we need to remove the tumor from this persons body."
The word mores is not a word.
The weight of the massive pines would challenge any longer. My weight sunk into the thick moss that covered the forest floor.
This justifies the use of this word, in a sentence.