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1. Not disposed to cheat or defraud; not deceptive or fraudulent
   "honourable lawyers";
   - honest, honorable [US]
    
2. Worthy of being honoured; entitled to honour and respect
   "an honourable man"; "led an honourable life"; "honourable service to his country";
   - honorable [US]
    
3. Morally correct; principled and good
   "followed the only honourable course of action"; "it seems honourable and right";
   - ethical, honorable [US]
    
4. Deserving of esteem and respect
   "ruined the family's honourable name";
   - estimable, good, honorable [US], respectable

See also: artless, august, direct, downright, echt, genuine, honorableness [US], honorificabilitudinitatibus, honourableness [Brit, Cdn], ingenuous, just, laureate, moral, noble, open-faced, reputable, revered, right, sincere, square, straight, straight-up [informal], time-honored [US], time-honoured [Brit, Cdn], true, trustable, trustworthy, trusty, venerable, worthy

Antonym: dishonorable [US]

Encyclopedia: Honourable