Learner's definition of CONSPICUOUS
[more conspicuous; most conspicuous]
1 : very easy to see or notice
There were a number of conspicuous changes to the building.
The sign was placed in a very conspicuous spot/position.
The bird has a conspicuous red head.
She felt very conspicuous in her pink coat.
He was uncomfortable about his conspicuous weight gain.
The President was conspicuous by his absence at the peace talks. [=his absence was very noticeable; people had expected him to be there and noticed that he wasn't]
2 : attracting attention by being great or impressive