fit, suitable, to be chosen; having the right qualification

fit, worthy

not willing to admit members or mix with others considered to be inferior in social position, education etc

unshared, restricted

protected (from disease, danger, punishment etc); not able to be affected (by); protected (against)

invulnerable

done legally (especially concerning conditions for an activity to be carried out)

legal

of, concerning, a position of trust or authority

authorized, legitimate

of a profession; doing something in a way hat shows care or concern

skilled, trained

able, skilful

able, skilful