inconsiderable

adjective2

1. •
   Too unimportant to be worthy of attention.

   • There will be inconsiderable rises in British Railways day return fares in the London Area; those priced at 2s. and over are unchanged, as are the ordinary single fares. — 1954
2. •
   Impossible to consider as a possibility; inconceivable.

   • It is not inconsiderable to me that all the above can simultaneously exist. — 1996