gutturalize

gut.tur.al.ize

v.tr.（及物动词）
gut.tur.al.ized,gut.tur.al.iz.ing,gut.tur.al.iz.es
To pronounce in a guttural manner.
粗声地说话
Linguistics To velarize.
【语言学】 改软腭音

【引伸】
gut.turaliza.tion