Here are some common examples of words with "a-" as a prefix:
* a- + symmetrical = asymmetrical: Meaning not symmetrical.
* a- + moral = amoral: Meaning lacking a moral sense.
* a- + bio = abiotic: Meaning non-living.
* a- + sexual = asexual: Meaning lacking sexual characteristics.
* a- + typical = atypical: Meaning not typical.
* a- + conscious = unconscious: Meaning lacking consciousness.
* a- + possible = impossible: Meaning not possible.
* a- + social = asocial: Meaning not sociable.
* a- + political = apolitical: Meaning not interested in politics.
The prefix "a-" often indicates negation or absence, meaning "not" or "without."
If you're looking for words with "a-" as a root, it's less common. Some examples include:
* aardvark: A nocturnal mammal.
* abyss: A deep and bottomless chasm.
* axiom: A statement or proposition that is regarded as being self-evidently true.
It's worth noting that some words may have other origins and still contain the letter "a" at the beginning. For example, "acorn" and "alligator" do not derive their meaning from the prefix "a-".
I hope this helps clarify things!