1.
If you say that ~ a particular thing should happen or be done, you mean that this is what you would like to happen or be done, but you know that this is may not be possible or practical.
People should, ~, eat much less fat.
= preferably
ADV: ADV with cl/group
2.
If you say that someone or something is ~ suited, ~ located, or ~ qualified, you mean that they are as well suited, located, or qualified as they could possibly be.
They were an extremely happy couple, ~ suited...
= perfectly
ADV: usu ADV -ed, also ADV after v