Abstract: This study intends to determine the extent of vocabulary skills among Nigerian university undergraduates. This is identifiable through the use of descriptive rating. The study made use of qualitative analysis research to identify the extent to which vocabulary of 180 Nigerian university undergraduates’ respondents are attained. The qualitative research method was designed to help reveal the behavior and perception of the respondents with reference context clues of vocabulary skills. The type of qualitative research methods adopted was on content analysis. The results of this qualitative research was more descriptive and the inferences drawn easily from the data which is obtained. Results and findings of the study lead to the development of the additional instructional aids to enhance the degree of vocabulary of university undergraduates’ students. The findings disclose that the degree of vocabulary skills of the students previous to introduction to context clues is moderate extent, while the extent of the vocabulary skills of the students after introduction to context clues is high extent. The degree of vocabulary skills of the students previous to exposure to visual association is moderate extent while the extent of the vocabulary skills of the students after introduction to visual association is also moderate extent. This shows significant relationship on the level of vocabulary skills of the students earlier than and subsequent to introduction to context clue and visual association strategies. It recommends consequently that appropriate additional instructional aids should be created and used with the intention of improve the extent of vocabulary skills of Nigerian university undergraduates.
Key Words: Additional Instructional Aids, Context Clues, Nigerian University Undergraduates, Visual Association, Vocabulary Skills.