I went with agnosticism for a long, long time because I just hated to say I was an atheist - being an atheist seemed so rigid. But the more I became comfortable with the word, and the more I read, it started to stick.
Although I've been a longtime Democrat (primarily because, unless there is some very compelling reason to be otherwise, I am always for 'the little guy'), my political orientation is not rigid. For instance, I supported John McCain's run for the presidency in 2000.
I went to a grim Victorian school with classes of 40 or 50 children. It was a very rigid and unimaginative education, but it did teach us the three Rs.
Japanese people accept that art and commerce will be blended; and, in fact, they are surprised by the rigid and pretentious Western hierarchy of 'high art.'
I used to be very rigid because I just wanted to get through it. Now, if I think a scene should go a certain way and it goes another, I'm able to go that new way with ease.
The Malays, like the Japanese, have a most rigid epistolary etiquette and set forms for letter writing. Letters must consist of six parts and are so highly elaborate that the scribes who indite them are almost looked upon as litterateurs.