In other words: a, q, and x

• adimplete, verb (transitive). To fill; to make complete.
• ambidexterity, noun. Skill or talent, esp. in two or more fields; also: ability to alter oneself, one’s opinions, etc., to serve different purposes; adaptability.
• antennation, noun. The action of an insect using its antennae to touch something, esp. (the antennae of) another insect; an instance of this.
• consistent, adjective. Acting or done in the same way over time, especially so as to be fair or accurate; unchanging in nature, standard, or effect over time; non-contradictory. 
• dep, noun. A person who stands in temporarily for another, esp. a musician in a band; also: an instance of being such a temporary stand-in (from deputy). 
• ex abundante cautela, adverb. By way of extreme caution; as an added precaution.
• kibitz, verb (transitive). To watch (a card game or card player) as a spectator, typically while offering (unwelcome) advice or criticism. 
• metanarrative, noun. A storyline or encompassing theme that gives context, meaning, and purpose to, or unites, all smaller themes and individual stories; (in postmodernist literary theory) a narrative about a narrative or narratives. 
• nutual, adjective. Expressed merely by a gesture.
• quadragenarian, noun. A person who is 40 or more and less than 50 years old.
• querimonious, adjective. Prone to complaint; complaining; see querulous.
• querulous, adjective. Complaining in a rather petulant or whining manner; see querimonious.
• worldview, noun. A comprehensive conception or apprehension of the world, especially from a specific standpoint (aka weltanschauung).
• xanthochromia, noun (Medical). Discoloration.
• xenophobia, noun. Fear and hatred of strangers or foreigners or of anything that is strange or foreign.
• xylotypographic, adjective. Of or relating to wooden type; printed from wooden type or from wood blocks.