Allow and admit is what it said in the thesaurus.
a or an
you can use or , otherwise, or rather than.
next
Like
as reported by, as stated in, conforming to, in agreement with, in consonance with, in keeping with, in line with, just as, pursuant to, to the degree that
hard
Forefather?
peter
spectacular
athletics
demonstrate, employ, illuminate,
You can use: manage and succeed.