affricates are consonants that are said with a stop with a fricative immediately afterwards. for example, the 'ch' sound in english (written as /t͡ʃ/ in ipa) is said with an 't' (/t/) sound with an 'sh' (/ʃ/) sound immediately afterwards. both voiced and voiceless affricates exist; in english, they are /d͡ʒ/ (the 'j' sound) and /t͡ʃ/ (the 'ch' sound) respectively.