Silozi consists of:
- 5 vowels: a, e, i, o, u
- 20 consonants: p, t, c, k, b, d, j, g, f, s, sh, h, z, w, l, y, m, n, ny, ŋ
- 40 consonant clusters (mostly in word-initial position): mp, nt, nc, nk, mb, nd, nj, ng, ns, nz, pw, tw, cw, kw, bw, fw, sw, shw, hw, zw, mw, nw, nyw, ŋw, mpw, ntw, ncw, nkw, mbw, ndw, njw, ngw, nsw, nzw, py, by, my, mpy, mby, ly
Syllables may consist of a consonant + vowel, consonant cluster + vowel, or a nasal consonant alone (this also occurs in Cantonese). Each syllable is differentiated by the length and tone. There are:
- 2 tones in short syllables: H, L (H = high, L = low)
- 3 tones in long syllables: HH, LL, HL