Loyally, faithfully. Formerly also: †sincerely; confidently (obsolete). Now rare and archaic.

Honestly, honourably, with integrity. Chiefly with verbs of getting, dealing, etc. Obsolete.

In an honourable manner; with honour.

Honourably. Now somewhat rare (nonstandard).

With honourable conduct; without lying, cheating, or stealing; fairly; truthfully; with integrity or honest intentions. Also: sincerely, candidly.

Honourably. Obsolete.