reserved   
atokana
fandrihana
to be trapped; to be subscribed to (of a periodical); to be reserved (of a hotel room, a seat, etc); see mamandrika, famandrihana [Hallanger 1973]
mihafahafa
to alter one's behaviour, to be different, to appear reserved, to be less sociable, to act the stranger. [Richardson 1885]
vitsy teny
reserved, taciturn [Hallanger 1973]