Grok - understand (something) intuitively or by empathy
Haberdasher: someone whose job is selling cloth, pins, thread, etc. used for sewing, or a shop where these things are sold
Impetus - the force that makes something happen or happen more quickly
"the crisis of the 1860s provided the original impetus for the settlements"
Jumboree: a noisy celebration;
alarge assembly, often international, especially of Boy Scouts or Girl Scouts;
a mass gathering or assembly, as of a political party or association.
