Power Words and Word Power in Project Management

The question in discussion is two fold:
1. How impactful we are in our daily communication with our team- which in my opinion, addressed here quite well.
2. Second part of the question is about Power Words- these are the typical monosyllable (exclude reluctance), which exudes, confidence, clarity, direction, encouragement, and purpose. Choice of these words can make communication strong and effective, but one has to be cautious about similar sounding words such as Terrific and Terrible.
Brilliant - can convey appreciation, acnkowledgement
Demonstrative- saying somebody's knowledge is above the rest

Iam sure there are more, and are in use in routine dialouge.

Satish, since you ask for words, I believe the most powerful words in general are 'thank you', 'how can I help you?', 'let's do ...'.
If we think about powerful, what we mean is how to influence others. The most powerful words then are those which create a vision in others, inspire them, make them feel happy. As (project) leaders, we may have to create them and link them with the emotions of the team or the customer. Example Obama's 'yes, we can' or Trump's 'make America great again'. As words, they are meaningless, in the context they influence masses.

Succinct and Summarise are keywords emerging here, also, Questions, Listen, Purposeful, Clarify, Honest Answers....wonderful insight is emerging here!

Satish:
As far as other power words one that all PMs need available is No. Time Management will be the failure of many a PM. You have to be able to juggle all your priorities and many times if you say Yes too often; you'll not stay focused. You can say No but follow up with " but we can schedule some time next week to chat", "let's add this to the parking lot", "once we get past this phase perhaps we can revisit", "it's out of scope", "check with the risk manager", and the list goes on.

Naomi,
Yes those word have powerful menings conveyed. You will agree with me, say the most by using th least!

All of the above! Summation, concise, to the point. The easiest way I do this with my email and verbal communication is to do the "So What?" test. When doing weekly summary, or defining key meeting objectives, I think "so what?" after each item. I attended a strategic meeting, blah blah. The team finished worked on widget X? So what? The "so what" may have been increased communication during the meeting which allowed the team to unearth new risks, or confirm assumptions. Finishing that widget could have been a critical piece to the project, that needs to be called out as a success. By not only summarizing, but showing the value for every thing I do, it helps me, it helps the team, it helps the stakeholders remember why they are doing the project and what it will get for them.