Adept, adroit, deft, dexterous, handy, skillful.
Adequate, adjoining, bordering, near, neighboring.
Admire, adore, respect, revere, venerate.
Admit, allow, concede, grant, suffer, tolerate.
Admixture, alloy.
Adverse, disinclined, indisposed, loath, reluctant, slow, unwilling.
Aerial, airy, animated, ethereal, frolicsome.
Affectation, cant, hypocrisy, pretense, sham.
Affirm, assert, avow, declare, maintain, state.
Aged, ancient, antiquated, antique, immemorial, old, venerable.