What is Deal Sealer?
1.
The characteristic, of a person, that seals the deal when considering entering into a relationship.
Opposite of dealbreaker
The fact that Dave drove a hybrid car, as a testimony to his dedication to a green lifestyle, was a deal sealer when Christine considered a long term relationship with him.
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1.
one who displays librarian-like tendencies despite their best efforts to hide them; in fact they usually make no efforts to hide them wh..