nub Synonyms

pith nitty-gritty heart and soul gist heart sum inwardness kernel substance stub nubble marrow meat essence centre core center newbie speed bump quintessence sum and substance decisive point quiddity protuberance polyatomic point nucleus root snapper soul knobble midpoint Central Point nerve center swelling bottom line center of gravity nuts and bolts n00b spirit rationalness nubbin gravamen foundation focus distillate crux corm centrepiece axis