Vocabulary teaching is one of the most imperative aspects of instruction for ESL learners because it influences both productive and respective skills of students. This prudent study stresses and explores how to use hyponyms of the select TED wordlist nouns in academic writing. Therefore, the qualitative gap in vocabulary understanding of ESL learners can be linked. The method made use of WordNet to evaluate and the outcome was analyzed. The acquired results of this research revealed that the effective use of WordNet increased more acquaintance for learning the meaning of new vocabulary. Copyright © 2019 by authors, all rights reserved.