| ancient, aunchient | long-established, long-standing |
| appoint | ordain, set up, establish |
| approved | tested, tried, established, proven |
| arming | establishment, confirmation, substantiation |
| convince | establish, prove, demonstrate |
| customed | legally sanctioned, established by custom |
| duello | established duelling code |
| ensconce | secure, establish oneself firmly |
| fasten | fix the idea, establish, inculcate |
| fixed | rooted, established, in place |
| frame | plan, established order, scheme of things |
| grandsire | long-established, old-fashioned |
| grounded | firmly established, deep-rooted, strongly founded |
| judge | establish, determine, decide on |
| lay | make a claim, establish a position |
| ordain | appoint, establish, institute |
| place | establish in office, appoint to a post |
| plant | set up, establish, introduce |
| planting | installing, stationing, establishing |
| pre-ordinance | pre-ordained law, previously established ordinance |
| prove | find, establish, experience |
| prove | justify [one's] claim, establish |
| prove | demonstrate, establish, show to be true |
| regular | established, prescribed, constituted |
| root | grow, be established, flourish |
| seasoned | established, settled, mature |
| seat | settle, establish |
| settle | establish, set up, give a home to |
| settled | fixed, established |
| stablish | variant of 'establish' |
| stablishment | confirmed possession, settlement |
| true-fixed | firmly established, immovable, unwavering |
| well-found | of proven merit, of established reputation, commendable |