Adjective

1. Resistant to pressure.
2. Requiring a lot of effort to do or understand

   a hard problem

3. Demanding a lot of effort to endure.

   a hard life

4. , severe, harsh, unfriendly, brutal.
5. Unquestionable.

   hard evidence

6. Of drink, strong.
7. Having a comparatively larger or a ninety-degree angle.

   At the intersection, there are two roads going to the left. Take the hard left.

8. Of water, high in dissolved calcium compounds.
9. Sexually aroused.
10. Having muscles that are tightened as a result of intense, regular exercise.
11. Of a ferromagnetic material, having the capability of being a permanent magnet by being a material with high magnetic coercivity (c.f. soft)

Quotations

• (requiring a lot of effort to do or understand) 1988: “Ray found it hard to imagine having accumulated so many mannerisms before the dawn of sex, of the sexual need to please, of the staginess sex encourages or the tightly capped wells of poisoned sexual desire the disappointed must stand guard over.” — An Oracle, Edmund White

Synonyms

• (resistant to pressure): resistant, solid, stony
• (requiring a lot of effort to do or understand): confusing, difficult, puzzling, tough, tricky
• (requiring a lot of effort to endure): difficult, intolerable, tough, unbearable
• (severe): harsh, hostile, severe, strict, tough, unfriendly
• (unquestionable): incontrovertible, indubitable, unambiguous, unequivocal, unquestionable
• (of drink): strong
• See also Wikisaurus:difficult

Antonyms

• (resistant to pressure): soft
• (requiring a lot of effort to do or understand): easy, simple, straightforward, trite
• (requiring a lot of effort to endure): bearable, easy
• (severe): agreeable, amiable, approachable, friendly, nice, pleasant
• (unquestionable): controvertible, doubtful, ambiguous, equivocal, questionable
• (of drink):
  • (low in alcohol): low-alcohol
  • (non-alcoholic): alcohol-free, soft, non-alcoholic soft

Noun

1. A firm or paved beach or slope convenient for hauling vessels out of the water