Sustainability is a rather long word, not little in size nor concept. It is well past the typical eight-letter (or fewer) word of choice in the One Little Word class. As an idea, the word enormous comes to mind. So, in the interests of a "little" word, I have chosen sustain.
I have spent a lot of time reflecting on this. My son spoke to me recently about his concerns for his son and the looming 2030 predictions of the collapse of the world as we know it. I wonder if, as an older individual, I'll be adaptable to the world as it will be, if I should still be here.
I've looked at the SDG's (sustainability development goals) the United Nations has published. It's seventeen items long!
There is good news. I read an interesting article from Medium, republished by Quartz on Facebook about good things happening in the world towards some SDG's.
Makes me think that making an effort does do some good.
Raised a Lutheran, a verse of A Mighty Fortress is Our God, seems particularly relevant to my choice.
"And though this world, with devils filled, should threaten to undo us,
we will not fear, for God hath willed his truth to triumph through us.
The Prince of Darkness grim, we tremble not for him; his rage we can endure, for lo, his doom is sure; one little word shall fell him." - Martin Luther
I'm not a person of religion any longer, but I do have faith in the power of little words.