| Historical sound change |
|---|
| General |
| Metathesis |
| Dissimilation |
| Fortition |
| Lenition (weakening) |
| Sonorization (voicing) |
| Spirantization (assibilation) |
| Rhotacism (change of [z] to [r]) |
| L-vocalization (change of [l] to [w]) |
| Debuccalization (loss of place) |
| Elision (loss) |
| Apheresis (initial) |
| Syncope (medial) |
| Apocope (final) |
| Haplology (similar syllables) |
| Fusion |
| Cluster reduction |
| Compensatory lengthening |
| Epenthesis (addition) |
| Anaptyxis (vowel) |
| Excrescence (consonant) |
| Prosthesis (initial) |
| Paragoge (final) |
| Unpacking |
| Vowel breaking |
| Assimilation |
| Coarticulation |
| Palatalization (before front vowels) |
| Velarization (before back vowels) |
| Labialization (before rounded vowels) |
| Initial voicing (before a vowel) |
| Final devoicing (before silence) |
| Vowel harmony |
| Consonant harmony |
| Cheshirisation (trace remains) |
| Nasalization |
| Tonogenesis |
| Floating tone |
| Sandhi (boundary change) |
| Crasis (contraction) |
| Liaison, linking R |
| Consonant mutation |
| Tone sandhi |
| Hiatus |
Haplology is defined as the elimination of a syllable when two consecutive identical or similar syllables occur. The phenomenon was identified by American philologist Maurice Bloomfield in the 20th century.[1] Linguists sometimes jokingly refer to the phenomenon as "haplogy" (subjecting the word "haplology" to haplology).