Here is a list of nouns that start with AD.

adage, adagio, adaptation, adapter, adapting

addiction, adding, addition, additive, adequacy

adherence, adherent, adhesion, adhesive, adjective

adjournment, adjudication, adjunct, adjustment, administration

administrator, adminstration, admiralty, admiration, admirer

admission, admittance, admonition, adobe, adolescence

adolescent, adoption, adrenal, adulation, adult

adultery, adulthood, advance, advancement, advantage

advent, adventure, adverb, adversary, adversity

advertisement, advertising, advice, advisability, advisement

adviser, advisor, advisory, advocacy, advocate

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