WordNet sense 1 (the members of a business organization that owns or operates one or more establishments):

house, house, business firm

WordNet sense 2 (not subject to change or variation especially in behavior):

steady

WordNet sense 3 (not liable to fluctuate or especially to fall):

unfluctuating

WordNet sense 4 (resistant to change of position or condition):

stable

WordNet sense 5 (established or decided beyond dispute or doubt):

settled

WordNet sense 6 (securely established):

established

WordNet sense 7 (free from danger or risk):

secure

WordNet sense 8 (marked by firm determination or resolution; not shakable):

steadfast, stiff, unfaltering, unshakable, unwavering, unbendable

WordNet sense 9 (firm in purpose or belief; characterized by firmness and determination):

resolute

WordNet sense 10 (not soft or yielding to pressure):

solid

WordNet sense 11 (resisting weight or pressure):

hard

WordNet sense 12 (pleasingly firm and fresh and making a crunching noise when chewed):

crisp, crunchy

WordNet sense 13 (recently made, produced, or harvested):

fresh

WordNet sense 14 (securely fixed in place):

fast, immobile

WordNet sense 15 (securely placed or fastened or set):

fixed

WordNet sense 16 (unwavering in devotion to friend or vow or cause):

loyal, truehearted

WordNet sense 17 (strong and sure):

strong

WordNet sense 18 (characterized by or full of force or strength (often but not necessarily physical)):

forceful

WordNet sense 19 (become taut or tauter):

tauten

WordNet sense 20 (with resolute determination):

firmly, steadfastly, unwaveringly