As you surmise, it’s necessary in My Position to be conservative, and perhaps endeavor to maintain a certain standard of dignity.
She was pony-built and plump, with the face of a haughty Pekingese, a button of a nose, and arms so short that, despite her most indignant endeavors, she could not clasp her hands in front of her as she sat on the platform waiting.
" ’But it’s here in Zenith, the home for manly men and womanly women and bright kids, that you find the largest proportion of these Regular Guys, and that’s what sets it in a class by itself; that’s why Zenith will be remembered in history as having set the pace for a civilization that shall endure when the old time-killing ways are gone forever and the day of earnest efficient endeavor shall have dawned all round the world!
There are no more uses of "endeavor" in the book.
Show samples from other sources
I endeavored to get both sides to agree to a compromise.