All answers begin with 'sub'
-1. SUB + posture = Matter. 9 letters
2. SUB + a seaman = Underwater. 9
3. SUB + to combine = To go under the surface. 8
4. SUB + a piece of land = To deduct. 8
-5. SUB + to message someone using a cellphone = Nuance or undertone. 7
-6. SUB + a citrus fruit = Transcendent. 7
7. SUB + a letter = Docile. 10
8. SUB + edge = To sink. 7
9. SUB + harden = Part of a bigger group. 6
-10. SUB + quest = The act of yielding to another. 10
