Starting with vexillology: there are a number of words from same root.
velarize
vt.
3ized#, 3iz#ing Phonet. to modify the pronunciation of (a sound) by having the back of the tongue raised toward the velum during articulation
ve#lar[i[za4tion
n.

velate
adj.
5L velatus, pp. of velare, to cover: for IE base see VEIL6 having a velum


Not from velum
velitation
n.
5L velitatio < velitatus, pp. of velitari, to skirmish < velites, VELITES6 a hostile encounter; skirmish or dispute


velites
n.pl.
5L, pl. of veles (gen. velitis), akin to velox, swift & vehere, to carry: see WAY6 in ancient Rome, lightly armed foot soldiers


vellicate
vt., vi.
3cat#ed, 3cat#ing 5L vellicatus, pp. of vellicare, to twitch, pinch < vellere, to pluck < IE base *wel3, to tear, pluck out > OE w+l, battlefield6 [Now Rare] to twitch, pluck, etc.
vel#li[ca4tion
n.

Prolepsis (Noun)

Pronunciation: [pro-'lep-sis]

Definition 1: Today's word is about bringing the future into the present not with technology but through language. "Prolepsis" means: (1) the presentation of a future potentiality as an accomplished fact, (2) a response to criticism in advance of hearing it, and (3) placing a redundant descriptive phrase, that refers to a term in the middle of the sentence, at the head of the sentence.r

Resile (Verb)

Pronunciation: [ree-'zIl]

Definition 1: Retract to an original position; draw back from or withdraw after having second thoughts.

Usage 1: The adjective from today's word, "resilient" [ri-'zil-yênt] and the noun, "resiliency," are far more widely used than their long-lost father, today's word itself. Yet this verb remains a vibrant member of the English lexical cast, still performing in some English-speaking regions. Rubber bands are resilient because they resile after being stretched. Humans tend to resile from disruptive tragedies.

Nephelococcygia (Noun)

Pronunciation: [ne-fê-lê-kak-'si-jee-yê ]

Definition 1: (Literally, "Cloudcuckoosville") Interpreting the shapes of clouds.

Definition 2: La-la land, a dream land cut off from reality.

Vindemiate (Verb)

Pronunciation: [vin-'dem-i-yeyt]

Definition 1: To vintage (gather) grapes or pick other fruit.

Sevetal of these words were taken from a word list at”
http://yourdictionary.com/cgi-bin/wotd.cgi?word=vindemiate