The officer under suspension felt intimated by the committee members during his interrogation regarding the allegations against him.

The context of an officer under suspension being interrogated by committee members regarding allegations against him suggests he would feel frightened or threatened. 'Intimated' means to make known or announce, which does not fit the context. 'Intimidated' means to frighten or overawe someone, especially in order to make them do what one wants, which perfectly fits an interrogation scenario. 'Inculcated' means to instill an idea by persistent instruction. 'Asphyxiated' means deprived of oxygen. 'Annulled' means declared invalid. Thus, 'intimidated' is the correct improvement.