troglodyte \TROG-luh-dyt\, noun:
1. A member of a primitive people that lived in caves, dens, or holes; a cave dweller.
2. One who is regarded as reclusive, reactionary, out of date, or brutish.
antediluvian \an-tih-duh-LOO-vee-uhn\, adjective:
1. Of or relating to the period before the Biblical flood.
2. Antiquated; from or belonging to a much earlier time.
noun:
1. One who lived before the Biblical flood.
2. A very old (or old-fashioned) person.
supernumerary \soo-puhr-NOO-muh-rair-ee; -NYOO-\, adjective:
1. Exceeding the stated, standard, or prescribed number.
2. Exceeding what is necessary or desired; superfluous.
noun:
1. A supernumerary person or thing.
2. An actor without a speaking part, as a walk-on or an extra in a crowd scene.