Haplology is the reduction of a sequence of two identical or very similar syllables to a single such syllable.
- Middle English humblely > Modern English humbly (Campbell 1998:37)
- Basque sagar "apple" + ardo "wine" > sagardo "cider" (Trask 1996:68)
the English possessive 's is not pronounced after the plural morpheme -s (e.g. John's reaction vs. the two cats' reactions). In Dutch, the noun-forming suffix -eling may attach to nouns, verbs and adjectives (dorpeling 'villager', zuigeling 'infant', stommeling 'idiot'). If the base ends in the sequence -el, one of the -el-sequences is haplologically deleted (edel 'noble', edeling 'nobleman').
- Haas, W. de & M. Trommelen 1992. Morfologisch Handboek van het Nederlands, SDU, Den Haag.
- Spencer, A. 1991. Morphological Theory, Blackwell, Oxford.
- Campbell, Lyle. 1998. Historical Linguistics: An Introduction. Edinburgh: Edinburgh University Press.
- Trask, R. L.. 1996. Historical Linguistics. London: Arnold.