Hard, bony lump on left side of hard palate in back, sometimes tender when pushed, often painless. had it for 1 year. grew a bit. no cancer symptoms ?

See an ENT: Yes, please see an ENT physician. This could be nothing but bony growth, however, if it is a problem, the sooner you are diagnosed, the better. I hope you seek help soon, and take care.

Palate: There are many salivary glands that could cause benign tumor formation in that area. This area should be evaluated and biopsied as soon as possible. Oral & maxillofacial surgeon or ENT can perform this.

Maybe a tori: It appears that you might be describing a tori. This is a bony growth in the jaw bone. It is not cancerous and can become sore if it is traumatized by hard foods. However, see your dentist for a thorough evaluation.