Important discovery in doing something difficult.

action of staying where one is or delaying action until particular time or event. To remain in a place until a thing happens.

Having happened or been done before this time.

set down in writing or some other permanent form for later reference. To write down or say what happened.

used as object of verb or preposition when this is same as subject of clause.

sentence worded or expressed so as to elicit information. What you ask about; issues. To have or express concerns or uncertainty.

Without taking a lot of time; fast.

A formal speech to a group of people. To refer to someone or something formally.

continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. moving in one side and out of other side of.

moving or situated in opposite direction from that in which river flows. In the direction opposite the flow of river/stream.

used to emphasize basic, fundamental, or intrinsic nature of person or thing.

Of practical use of machine/science in industry. undefined.

with little or no space or time in between.

Series of meetings for e.g. a court, legislature.