In the following spelling question, four words are given, out of which one word is incorrectly spelt. Identify the incorrectly spelt word.

Introduction / Context:
This question tests your knowledge of standard English spellings. You are given four similar looking words, and only one of them is spelled incorrectly. Such questions are very common in competitive exams, because correct spelling shows careful reading and familiarity with written English. Your task is to identify which option does not match the standard spelling of the word it attempts to represent.

Given Data / Assumptions:

• Options: "Assuage", "Aporism", "Appease", and "Atrocious".
• Three of these words are spelled correctly in standard English.
• One option is a misspelling of a real word.
• You must recognise both the correct spellings and the meaning families of these words.

Concept / Approach:
First, identify the familiar words. "Assuage" means to ease or relieve something, such as pain or fear, and is spelled A S S U A G E. "Appease" means to calm or pacify and is spelled A P P E A S E. "Atrocious" means extremely bad or cruel and is spelled A T R O C I O U S. All three are standard, commonly accepted spellings. The remaining option, "Aporism", seems to be intended as "Aphorism", which is a short, clever saying that expresses a general truth. The correct spelling is A P H O R I S M, not A P O R I S M. Therefore, "Aporism" is the incorrectly spelt word.

Step-by-Step Solution:
Check "Assuage": you may have seen this in reading material and dictionaries; its spelling with double s and "uage" at the end is standard.Check "Appease": a familiar verb with double p and "ease" at the end, also correct.Check "Atrocious": notice the pattern "atroc" plus "ious", which is the correct adjective form.Examine "Aporism": this does not match any standard English word, but it resembles "Aphorism", which is spelled with "ph" rather than "p".Conclude that "Aporism" is a misspelling and thus the incorrect word.

Verification / Alternative check:
If you consult a standard dictionary (mentally, based on your reading experience), you can recall sentences like "He tried to assuage her fears", "The leader tried to appease the angry crowd", and "The prisoners lived in atrocious conditions". These confirm that the spellings of "Assuage", "Appease", and "Atrocious" are correct. For short wise sayings, you might recall "an old aphorism", which always uses "ph", never "p", in its spelling. Hence, "Aporism" is clearly wrong.

Why Other Options Are Wrong:
Option A, "Assuage", is a correctly spelled verb. Option C, "Appease", is also correct and widely used. Option D, "Atrocious", matches standard spelling. None of these is the one incorrect option; they are included to test whether you can distinguish them from a cleverly disguised misspelling.

Common Pitfalls:
Test takers sometimes mistrust unusual letter combinations such as "suage" or "cious" and incorrectly label them as wrong. Another common mistake is to assume that a word they have seen less often must be incorrect. Instead, it is better to ask which option fails to correspond to any real word you recognise from reading. In this case, "Aporism" stands out once you recall the correct spelling of "Aphorism".

Final Answer:
The incorrectly spelt word is Aporism; the correct spelling of the intended word is "Aphorism".