The state of being difficult, or hard to do; hardness; arduousness; -- opposed to easiness or facility; as, the difficulty of a task or enterprise; a work of difficulty.

Something difficult; a thing hard to do or to understand; that which occasions labor or perplexity, and requires skill and perseverance to overcome, solve, or achieve; a hard enterprise; an obstacle; an impediment; as, the difficulties of a science; difficulties in theology.

Embarrassment of affairs, especially financial affairs; -- usually in the plural; as, to be in difficulties.

an effort that is inconvenient; "I went to a lot of trouble"; "he won without any trouble"; "had difficulty walking"; "finished the test only with great difficulty"

a factor causing trouble in achieving a positive result or tending to produce a negative result; "serious difficulties were encountered in obtaining a pure reagent"

An important component of the technical merit of a routine, as it tests the swimmer's skill level.

Alternative name for the tariff of a routine

A controversy; a falling out; a disagreement; an objection; a cavil.

an indispensable stimulus to thinking, but not all difficulties call out thinking

The level of challenge associated with a test, established by a Target Number (TN). This ranges from 5 (easy) to 25 or more (nearly impossible).

the level of resistance to successful performance of the agents of measurement on the variable.

the quality of being difficult; "they agreed about the difficulty of the climb"

Complexity of movements, speed of movements, number if figures and hybrids.