Yes, soft is a Scrabble word!

Adverb

1. In a relaxed manner; or without hardship

Adjective

1. Yielding readily to pressure or weight

2. Compassionate and kind; conciliatory

3. (of sound) relatively low in volume

4. Easily hurt

5. Produced with vibration of the vocal cords;

6. Not protected against attack (especially by nuclear weapons)

7. Used chiefly as a direction or description in music

8. (of light) transmitted from a broad light source or reflected

9. (of speech sounds); produced with the back of the tongue raised toward the hard palate; characterized by a hissing or hushing sound (as `s' and `sh')

10. (of a commodity or market or currency) falling or likely to fall in value

11. Using evidence not readily amenable to experimental verification or refutation

12. Tolerant or lenient

13. Soft and mild; not harsh or stern or severe

14. Having little impact

15. Out of condition; not strong or robust; incapable of exertion or endurance

16. Willing to negotiate and compromise

17. Not burdensome or demanding; borne or done easily and without hardship

18. Mild and pleasant

19. Not brilliant or glaring