Challenge: Dictionary.com word of the day for the week ending 24 April

[alyse]

Here are this week's words of the day from Dictionary.com:

# quiddity: the essence or nature of a thing.
# crepuscular: pertaining to twilight.
# stormy petrel: a type of seabird; also, one fond of bringing strife.
# peccadillo: a slight offense; a petty fault.
# invidious: tending to provoke envy or ill will.
# paladin: a champion of a cause.
# gainsay: to contradict; to deny.

Fic, art, vids etc inspired by these words are always welcome, and you can use derivatives of the word to inspire you (or incorporate) instead if you like.

Bonus points if you manage to fit a whole week's worth in ::g::