This study aims at investigating the integration of morphosyntactic and semantic property in deverbal nouns with an agentive suffix -er, and analyzing the integrated properties by plausible constraints. The agentive nouns derived from the verbs reflect form-meaning correspondences or non correspondences in word formation patterns through the attachment of a suffix -er. The phenomena that the agentive nouns are derived by the addition of a morphological unit verify the productive and paradigmatic constructions, which is clarified by Booij’s (2012, 2016) morphological schema. As a result, the consolidated properties shown in the general formations of agentive nouns as well as the deverbal nonagentive nouns with -er and zero-derived nouns without -er, which might appear to be nonparadigmatic, could be analyzed by the integrated constraints Overt Aff, [V+Aff]_A-N, [ ]_A-N, and -[V+Aff]_A-N with validity. All of the output nouns except for agentive nouns without -er have the same constraint ranking in which Overt Aff and [V+Aff]_A-N take precedence. (Mokwon University)