Among the four words in the options, three are alike in some way and one is different. Find the odd one out

Let's take a look at the tone and meaning of each option individually:
(A) Adoring: This word has a positive tone and means showing deep love and affection.

(B) Jealous: This word has a negative tone and means feeling or showing envy of someone or their achievements and advantages.

(C) Manic: This word has a somewhat negative tone. It means showing wild, deranged, or excited energy, often in a way that is overwhelming or uncontrollable.

(D) menacing: This word has a negative tone as well. It means suggesting the presence of danger or threat.

"Adoring" is the only word with a positive connotation and, hence, is the odd one out. 

Therefore, Option A is the correct answer.