an enclosed stall in a church divided by a screen or curtain in which a priest sits to hear confessions

the secrets of the confessional

an acknowledgement that one has done something shameful or embarrassing; a confession

tabloid confessionals

(of speech or writing) in which a person reveals private thoughts or admits to past incidents, especially ones about which they feel ashamed or embarrassed

the autobiography is remarkably confessional

his confessional outpourings

relating to confessions of faith or doctrinal systems

the confessional approach to religious education