laryngealize

laryngeal +‎ -ize.

laryngealize (third-person singular simple present laryngealizes, present participle laryngealizing, simple past and past participle laryngealized)

1. (phonetics) To articulate as a laryngeal sound, to produce (a sound) through or with action of the larynx.
2. (phonetics) To modify (a pronunciation or a sound) by constricting the larynx.
   • 1993, Fernando Poyatos, Paralanguage‎, page 209:

     But creaky or laryngealized quality throughout whole stretches of very low-pitched speech characterize boredom, reluctance [etc.] Children typically laryngealize their voice for coaxing adults.

• creaky voice
• guttural