firm

noun:a business organization that sells goods or services, especially one of a professional nature such as a law or accounting firm
- She was hired by a prestigious consulting firm after graduating.
adjective:having a solid, hard, or unyielding surface; not soft
- The mattress was too firm for his liking.
adjective:strongly fixed, steady, or secure
- He kept a firm grip on the railing.
adjective:strong, resolute, or unwavering in belief or attitude
- She was firm in her decision to decline the offer.
verb:to make something more solid or compact
- He firmed the soil around the new seedlings with a tamping tool.