The development of the meaning of adverbial modifiers was studied by pair-comparison and ranking methods. The adverbs studied consisted of slightly, somewhat, rather, pretty, unmodified form, quite, decidedly, unusually, very, and extremely. The scaling tasks were administered to Ss in grades 1, 2, 3, 4, 5, 6, 8, 10, 12, and college. Obtained scale values were highly reliable. Scalability was seen to relate positively to age-grade classification. Primary-grade Ss identified at least 3 adverb groups while adults identified about 6 groups. Correlations of scale values of primary-grade Ss with college Ss ranged from .74 to .94. All other groups yielded correlations with college data above .90. Some words were seen to shift in meaning as a function of agegrade group. Results are interpreted in terms of applications to general scaling methodology, measurement methodology with young children, and research in language development.