This chapter examines the extent of similarities between onomatopoeias representing identical or similar sound events. Since onomatopoeias are causally determined iconic images and indexes, one might expect a high degree of cross-linguistic similarity. As Akita and Imai (2022: 29) note in their model of an iconicity ring, onomatopoeias as instances of primary iconicity are characterized by early acquisition and, importantly, universality. Another factor that should contribute to the cross-linguistic similarity of onomatopoeic words is the phenomenon of sound symbolism, in particular, the existence of universal phonesthemes. Nevertheless, Chapter 6 identifies a range of factors affecting the level of cross-linguistic similarity, including psycholinguistic, sociolinguistic, language-inherent factors as well as those related to the imitated sound event. This chapter identifies onomatopoeic patterns for eighteen sound events based on the sample data. The criteria include the number and the structure of the syllables, the type of the onset, nucleus, and coda, presence/absence of iconic reduplication, and vowel/consonant lengthening. An analysis of these patterns makes it possible to draw typological generalizations.