Set the letter's value in the Refers To box. You can create a value from data in a cell in the worksheet or you can add your own number. By default, Excel puts a reference to the currently selected cell in the box. If this contains your value, keep the default.
Gravely (the adverb) comes from the adjective, which comes from Latin (gravis), where it meant heavy or serious (this is where we get gravity--heaviness). Gravely ill means seriously ill, not soon to be in the grave. (and proof [1]). Bonus tidbit: grave (the noun) comes from words that originally meant to dig then a place dug, as for burial or, a grave. This is the same root as engrave.
The noun anguish refers to severe physical or emotional pain or distress. A trip to the dentist might cause a cavity-prone person a lot of anguish. We get this word from a Latin word, angustus, which literally meant narrow but developed the figurative sense of distressed â think of being choked off or forced into a small space. In modern times anguish has been in the English with the parallel and related meanings of physical torment and emotional suffering.. Both kinds might be experienced at the hands of a dentist who likes to make his patients squirm in agony.