unheard of/incredible/on top of all/to crown at all/in passing

[vil]

Dear teachers,

Would you be kind enough to share with me your opinion concerning the plausibility of the following sentences?

It’s unheard of.
unheard of = not known or not widely known by name
It is incredible.
He acted with deliberance (deliberateness).
He acted deliberately.
On top of all he is charged with theft.
To crown at all he is charged with theft.
It was done deliberately.
It was done on purpose.
We shall have to clear the matter up.
We shall have to investigate the matter up.
How did he come to be convicted of perjury?
How come he was convicted of perjury?
We felt apprehensive as to the result of the experiment.
We had some misgivings as to the result of the experiment.
It was said in passing. (in passing = incidentally, by the way)
It was an ingenuous plan.
It was a clever project.
They are very much alike. It is difficult to tell one from the other.
tell one from the other = distinguish one from the other

Thank you for your efforts.

Regards,

V.

[sarat_106]

Dear teachers,

Would you be kind enough to share with me your opinion concerning the plausibility of the following sentences?

It’s unheard of.
unheard of = not known or not widely known by name
It is incredible.
He acted with deliberance (deliberateness).
He acted deliberately.
On top of all he is charged with theft.
To crown at all he is charged with theft.
It was done deliberately.
It was done on purpose.
We shall have to clear the matter up.
We shall have to investigate the matter up.
How did he come to be convicted of perjury?
How come he was convicted of perjury?
We felt apprehensive as to the result of the experiment.
We had some misgivings as to the result of the experiment.
It was said in passing. (in passing = incidentally, by the way)
It was an ingeniuous plan.
It was a clever project.
They are very much alike. It is difficult to tell one from the other.
tell one from the other = distinguish one from the other

Thank you for your efforts.

Regards,

V.

All look fne. Incidentally I wanted to find out the actual meaning of 'deliberance' in Cambridge(American dictionary) and Heilne's Newbury dictionary which retuned no result. I wander if this word finds limited/nil use in America?