@Embodied: Yes. While words like anicca and anatta cannot be described in a few words, it could be good to have a “brief phrase” for bhavana purposes.
One should use a phrase that one considers to be most impactful; a phrase that gives the “sanna” about that word. Here are some examples:
Anicca – that nothing in this world can bring a permanent happiness in the long run.
Dukkha – despite our struggles, we will be subjected to much more suffering than pleasures if we remain in the rebirth process.
Anatta – therefore, one is truly helpless in this struggle to attain “something of essence in this world”. That is just an illusion.
These may not exactly right for you. Each person may “get it” a bit differently. However, all possible meanings are inter-related.
By the way, you need to think a bit more carefully before posting a question. This particular question was not formulated correctly when you first asked it, so I did not answer. Others can get confused if a question is not asked the right way.
Same is true for the question that you asked a little while ago, on a different topic on asura devas. Please read the previous comments and replies carefully again.