To forgo: to give up the enjoyment or advantage of : do without
forme fruste (froost) pl. formes frustes an atypical, especially a mild or incomplete, form, as of a disease
to elaborate: to expand something in detail elaborate on that statement>
Erratic: having no fixed course
e.g.: exempli gratia, for example
evanescent: appearing, then disappearing
flurry: a sudden occurrence of many things at once