without

To manage despite the lack of.

To forgo (something).

To not need to be said or mentioned; to be obvious, apparent, clear, or already established.

To accomplish a task without the proper materials or under unreasonable conditions; to do the impossible.

To ignore; to fail to consider.

To calculate one's bill without checking with the host or landlord; hence, to come to false conclusions, to miscalculate.

Of an event or process, without any problems.

Without showing or leaving behind any sign of something; tracelessly.

Showing no emotional reaction.

Certainly; by all means; as a matter of importance.