Q

Question: 1. he subject matter at issue 2. A sentence of inquiry that asks for a reply 3. Uncertainty about the truth or factuality of existence of something 4. Place in doubt or express doubtful speculation; "I wonder whether this was the right thing to do"

Quintessential: 1. An extract from anything, containing in concentrated form its most essential principle 2. The purest and most essential part, manifestation, or embodiment of anything