Amphibious/amphibians: Living a double life
Example: His talk will be on four wild animals, including an amphibian, reptile, bird and mammal.
Anachronism: Wrong time reference
Example: The intentional use of older, often obsolete cultural artifacts may be regarded as anachronistic.
Anagoge/anagogy: Spiritual uplift, reference to a principle
Example: Anagoge is currently in the bottom 30% of lookups on Merriam-Webster.com.
Anagram: Transpose the letters of one word so as to form another
Example: Any word or phrase that exactly reproduces the letters in another order is an anagram.
Example: It is argued that every analogy is partially superfluous and can be rendered as a deduction.
Analyse/Analysis: Loosen, simplify
Example: Sentence analysis is not always easy but it is an essential tool in English Grammar.
Anamnesis: Recollection, reminiscence
Example: Anamnesis is often used as a narrative technique in fiction and poetry as well as in memoirs and autobiographies.
Example: The writer makes his living by anecdotes. He searches them out and carves them as the raw materials of his profession.
Anemia: refers to a condition characterized by a qualitative or quantitative deficiency of the red blood cells (or of the hemoglobin).
Example: Never feed an onion to your pet, as large amounts can destroy your pet's red blood cells causing anemia.
Anesthe-: Lack of sensation, insensibility under surgical treatment
Example: The doctors had to give local anesthesia to the patient to be able to remove his tooth.
Anorexia: Lack of appetite
Example: The most commonly affected by anorexia are young women in education aged between 15-25.
Antagonize: Struggle against, prove a match for
Example: Mix a little sincerity and gumption in your hard-line approach, and perhaps you'll get somewhere and not antagonize others.