Kwon Young-Moon. 1999. Meaning Aspects of Complex Expressions. Studies in Modern Grammar 16, 199-219. The purpose of this study is to examine the meaning aspects of complex expressions. Complexity in thought tends to be reflected in complexity of expression. A complex expression has added morphemes or cannot neutralize in meaning in contexts that the almost equivalent expression can. Iconic motivation is reflected in linguistic expressions such as followings: singular - plural, affirmative negative, male - female, present - nonpresent, state - change of state, noun - pronoun, adjective - adverb, positive - comparative - superlative, cardinal - ordinal, and so on. The complexity principle is based on cognitive factors such as attention, priority, mental efforts, and so forth. To structuralize language through conceptualization is cognitively efficient, and it helps us to communicate with each other efficiently.