lisp

1. To pronounce the consonant ‘s’ imperfectly; to give ‘s’ and ‘z’ the sounds of ‘th’ (/θ/, /ð/). This is a speech impediment common among children. (intransitive) · Until the age of 10, Dominic would lisp, but this was fixed by a speech therapist.
2. To speak with imperfect articulation; to mispronounce, such as a child learning to talk. (intransitive)

He/she/it lisps · الماضي lisped · التصريف الثالث (اسم المفعول) lisped · صيغة -ing lisping