restrain   suppress    (to) kubuza, gutururuza
En-En dictionary 
guhaga amatama (-haze)   phr    to try to give speech but feel restrained
speech    imvugo, insiguro
(defect, esp. for s, ch, c) ubureve, e.g. kuvuga ubureve
(to be freed from ~ impediment) kugobōdoka
(to have ~ impediment) kugobwa
(to try to give ~ but feel restrained) guhaga amatama
En-En dictionary