A word which has opposite meanings

To part into
To cling to

sweetly, or innocently charming

i fell for her winsome smile immediately.

It is to be scared of the thought of being scared.

A person who is between the ages of 80 and 90.

The fear of long words like hippop... hippopo... I'm sorry, I just can't say it.

Very confused, throwing stuff around, tripping on air and on your own feet.

1. Any person or being with authorative power. An officer, a magistrate, commander.
2. A force to be reckoned with.

To destroy completely, obliterate, to crush.
Sentence example: Do not decimate the cities of the lands we are to conquer, for we will not have to rebuild what we have destroyed to win.

Characterized by or marked by excessive, extreme, or naive optimism.

It means colossal, huge, gigantic. (I thank you Elle Driver.)