analytic (comparative more analytic, superlative most analytic) Of, or relating to any form of analysis, or to analytics. Of, or relating to division into elements or principles. having the ability to analyse. (logic, of a proposition) that follows necessarily; tautologous.
The exclamation mark (British English) or exclamation point (American English) is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or high volume (shouting), and often marks the end of a sentence.
1 Formal, informational writing makes very rare use of the exclamation mark.  In my later years, I have taken to using an occasional exclamation mark in my emails to friends, those whom I know well enough that they know my vocal inflections and can follow what I mean by the use of the punctuation.