1.
If something is ~, you notice it easily and clearly.
His footprints were clearly ~ in the heavy dust...
...the best-publicised cases of ~ injustice.
= noticeable
ADJ
2.
You use ~ to show that you are certain about a situation or fact and your interpretation of it.
It was ~ that she had once been a beauty...
= clear
ADJ: oft it v-link ADJ that/wh emphasis
3.
see also self-~