Question

Choose the option which means the opposite of the given word:
Deleterious
A. Harmful
B. Experimental
C. Helpful
D. Practical

Answer 1

Hint: Opposites are words lying in an inherently incompatible binary relationship. For example, something that is long entails that it is not short. It is referred to as a 'binary' relationship because there are two members in a set of opposites

Complete answer:
‘Deleterious’ means causing harm or damage.
‘Harmful’ stands for causing harm or damage. Which is similar to ‘Deleterious’, hence option A is incorrect.
‘Experimental’ stands for connected with experiments or trying new ideas. Surely this has no link with the given word hence option B is incorrect.
‘Practical’ stands for actually doing something rather than with ideas or thought. Surely this has no link with the given word hence option D is incorrect.
‘Helpful’ stands for giving help. It looks opposite to the word ‘Deleterious’. Hence option C is correct.

Additional information:
A word that communicates a meaning opposite to another word's meaning, in which case the two words are antonyms of one another. Synonyms: antonym, reverse Antonym: synonym, word equivalent. In relation to that context, two terms which can be interchanged in a context are said to be synonymous.
An antonym is a word meaning the opposite of a different word. "For example, the antonym of" hot "may be" cold. "The root words for the word" antonym "are the words" anti, "meaning" against, "or" opposite, "and" onym, "meaning" name.
Let's take a look at what the term 'synonym' means in order to better understand antonyms. A synonym is a term which has a meaning identical to or exactly the same as another term. Exactly the same are synonyms and antonyms.

Hence the correct answer is option ‘C’

Note:Antonyms are used to reverse the meaning of a sentence. The use of antonyms is considered very important in English grammar. For correct use of antonyms, you will have to strengthen your vocabulary and memorize synonyms of maximum words.