Select the word which has the different meaning from the following group of words:
Tremble, Quiver, Steady, Fluctuate, Shudder, Flutter
A) Quiver
B) Steady
C) Shudder
D) Flutter

Hint: Synonyms are the words that are similar in meaning. To avoid the repetition of the word synonyms plays an important role. For example: the synonym of beautiful is lovely, pretty, stunning.

Complete step by step answer:
Option A) Quiver – is an incorrect answer because the meaning of quiver is ‘to shake slightly’ and this is the synonym of tremble and fluctuate as the meaning of all these words are same i.e. the meaning of quiver, tremble and fluctuate is same. Meaning of fluctuate is to change frequently from one thing to another and tremble is to shake. Thus, this is an incorrect answer.
Option B) Steady – is the correct answer because the meaning of steady is ‘developing, growing or happening gradually and at a regular rate’ and this is not synonyms of the words tremble and fluctuate. Thus, this is an incorrect answer.
Option C) Shudder – is an incorrect answer because the meaning of shudder is ‘to suddenly shake hard, especially because of an unpleasant feeling or thought’ and this is the synonym of the words tremble and fluctuate. Thus, this is an incorrect answer.
Option D) Flutter – is an incorrect answer because the meaning of flutter is ‘to move or make something move quickly and lightly, especially through the air’ and this is the synonym of the words tremble and fluctuate. Thus, this is an incorrect answer.

Thus, the correct option is (B).

Note:
Synonyms are the words that have the same meaning and antonyms are the words that have opposite meaning. So, the antonym of the word tremble is steadiness. So, in this question we are required to find the word that is not synonyms of each other. However, steady is the antonym of the other words given in the question. So, Option B is the most appropriate answer.