harder

1. (of material or fluid) Having a severe property; presenting difficulty.
2. (personal or social) Having a severe property; presenting difficulty.
3. Unquestionable.

   hard evidence;  a hard requirement

4. (of a road intersection) Having a comparatively larger or a ninety-degree angle.

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

5. (of a male) Sexually aroused.

   I got so hard watching two hot guys wrestle each other on the beach.

6. Having muscles that are tightened as a result of intense, regular exercise.
7. Plosive.

   There is a hard c in "clock" and a soft c in "centre".

8. Unvoiced

   Hard k, t, s, ch, as distinguished from soft, g, d, z, j.

9. Velarized or plain, rather than palatalized

   The letter ж in Russian is always hard.

10. Having a severe property; presenting a barrier to enjoyment.
11. In a physical form, not digital.

    a soft or hard copy ; a digital or hard archive

12. Using a manual or physical process, not by means of a software command.

    a hard reboot or reset

13. Far, extreme.

    hard right, hard left

14. Of silk: not having had the natural gum boiled off.

noun

Liza haematocheilus, the redlip mullet, a mugilid fish.