Perhaps pneumA...I can no longer recall if it's feminine, neuter, or masculine. Been about 35 years since Greek 101.
(Just a little trivia for your feminist "Holy Sophia" church friends, heehee)
You know, I think it is neuter in Greek 101. One BIG exception. When used in Holy Scripture as referring to God (The 3rd Person of the Blessed Trinity), the indefinite article is always MASCULINE. Wonder why....