stretched, stretched out
A portent is a warning that indicates what is likely to happen in the future, which is usually something unpleasant.
When someone is contentious, they are argumentative and likely to provoke a fight.
If you describe an action as ostentatious, you think it is an extreme and exaggerated way of impressing people.
If you are pretentious, you think you are really great in some way and let everyone know about it, despite the fact that it's not the case at all.
If you are attentive in the classroom, you are very aware of what is going on because you are focused on what the teacher is telling you.
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