【正确答案】：
（1）“LACONIC” MEANS “SHORT” OR “BRIEF”.
（2）IT BELONGS TO ETYMOLOGICALLY MOTIVATED WORD.
（3）IT IS DERIVED FROM “LACONS”，A TRIBE OF PEOPLE WHO WERE KNOWN FOR THEIR "BREVITY OF SPEECH" AND FOR THEIR HABIT OF NEVER USING MORE WORDS THAN NECESSARY. 
【题目解析】：（1）“Laconic” means “short” or “brief”. （2）It belongs to etymologically motivated word. （3）It is derived from “Lacons”，a tribe of people who were known for their "brevity of speech" and for their habit of never using more words than necessary.
