Someone who deserves your admiration can be described as admirable. Your friend who saves homeless kittens in his spare time? An admirable person.
An action can be admirable, like when you stop to help someone who's slipped and fallen on an icy sidewalk. A person can also be admirable, like your uncle who works building schools in Sri Lanka. If you admire someone for a good reason, that makes them admirable, or deserving of your respect and admiration. When you pronounce admirable, you stress the first syllable, ad, unlike admire, which has the emphasis on the last syllable, mire.