Dou(b)t, sold(i)er, diarr(h)oea, i(s)land, (k)now
Articulation is the answer :) have a nice day <3.
Answer:
When you need a quick summary of the essentials, rather than the whole story or a thorough explanation, you're looking for the gist. The word gist has had a variety of meanings in English, but most of them have become obsolete.