"morally significant" is a perfectly valid phrase to use in written English.
You can use it when referring to an action or statement that has a significant moral consequence or implication. For example: "Discrimination of any kind is morally significant and should be discouraged."
Here the moral significance of the claims of animals depends on what other morally significant competing claims might be in play in any given situation.
By highlighting these contexts and values, they reclaim the venues traditionally associated with women as morally significant sites, and they reclaim the moral agency of the individuals whose lives are centered in these sites.
Nonetheless, it can be agreed that health has special moral importance; therefore, health inequalities are also morally significant.
Although a demonstration that the death penalty has no deterrent effect would be morally significant in curbing its use, there is no particular or free-standing moral significance to the claim that it does have some deterrent effect.
If I promise you that I will trim your hedge, I face a moral obligation to uphold my promise, and in the absence of some morally significant countervailing reason, I should indeed cut your hedge.
But humans differ from animals in morally significant ways.
In each study, participants were asked to explain a different morally significant action.
The Nazis consciously wanted to eliminate martyrdom as a morally significant act.
From a naturalistic, non-anthropocentric perspective, preserving other life forms is also morally significant.
Christianity may offer little mitigation against City wrongdoing or morally significant mistakes.
We then articulate and evaluate three attempts to establish that the creation of artificial life is morally significant.
