stuttering

US /ˈstʌt̬.ɚ.ɪŋ/
UK /ˈstʌt̬.ɚ.ɪŋ/
1.

tergagap-gagap

happening in a way that is not regular, for example by being sometimes good and sometimes bad, or sometimes moving or changing and sometimes not :

:
Stuttering (= sometimes good and sometimes bad) productivity figures over the last two years have made the industry unattractive to investors.
1.

tergagap-gagap

the act of saying something, especially the first part of a word, with difficulty, for example pausing or repeating a sound several times:

:
During the 1970s and 1980s, rival theories about what causes stuttering came into vogue.