Demands Serious Effort Of Crossword Clue

• (physics) deformation of a physical body under the action of applied forces

• difficulty that causes worry or emotional tension

• a succession of notes forming a distinctive sequence

• (psychology) nervousness resulting from mental stress

• a special variety of domesticated animals within a species

• (biology) a group of organisms within a species that differ in trivial ways from similar groups

• injury to a muscle (often caused by overuse); results in swelling and pain

• the general meaning or substance of an utterance

• an effortful attempt to attain a goal

• an intense or violent exertion

• the act of singing

• to exert much effort or energy

• test the limits of

• use to the utmost; exert vigorously or to full capacity

• separate by passing through a sieve or other straining device to separate out coarser elements

• cause to be tense and uneasy or nervous or anxious

• become stretched or tense or taut

• remove by passing through a filter

• rub through a strainer or process in an electric blender

• alter the shape of (something) by stress