designate (a trump suit or no-trump) with the final bid of a hand(verb.possession)
source: wordnet30
make a declaration (of dutiable goods) to a customs official(verb.communication)
Example: Do you have anything to declare?.
source: wordnet30
proclaim one's support, sympathy, or opinion for or against(verb.communication)
Example: His wife declared at once for moving to the West Coast.
source: wordnet30
To make clear; to free from obscurity.(verb)
source: webster1913
To make a declaration, or an open and explicit avowal; to proclaim one's self; -- often with for or against; as, victory declares against the allies.(verb)