| AD | an African antelope closely related to the waterbuck |
|---|---|
| AD | any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye |
| AD | a nucleotide found in muscle cells and important in metabolism |
| AD | someone who is dazzlingly skilled in any field |
| AD | having or showing knowledge and skill and aptitude |
| AD | skillful performance or ability without difficulty |
| AD | the quality of being able to meet a need satisfactorily: "he questioned the adequacy of the usual sentimental interpretation of the Golden Rule" |
| AD | the quality of being sufficient for the end in view |
| AD | (sometimes followed by `to') meeting the requirements especially of a task |
| AD | about average |
| AD | enough to meet a purpose |
| AD | having the requisite qualities for |