Suprafixation (more specifically, tonal affixation) is a word-building strategy that is somewhat frequently employed in Cantonese. This article explores the development of the lexical suprafixes in Standard Cantonese from three perspectives: (a) earlier descriptions of the Cantonese suprafixes and the behaviour of the lexical suprafixes in some older Romanised Cantonese texts; (b) the behaviour of the lexical suprafixes in some non-standard Cantonese varieties; and (c) the behaviour of the suprafixes and diminutives in Yuè and Pínghuà dialects in general. A definite answer cannot be found to the question of what the origin of the Cantonese suprafixes is. Nonetheless, the theory that the Cantonese lexical suprafixes stem from the diminutive suffix *ɲi 兒 (Cantonese ji4, Mandarin ér) remains the most convincing.