Words:
* Wæcc: This word can mean "foolish" or "simple" and could be used to describe someone who is naive or lacks common sense.
* Dwol: This word means "foolish" or "stupid" and could be used to describe someone who makes careless mistakes.
* Wærfæst: This word means "unwise" or "inconsiderate" and could be used to describe someone who makes foolish decisions.
* Unwis: This word means "unwise" or "lacking wisdom" and could be used to describe someone who is naive or lacks knowledge.
Phrases:
* Dōn swā dēofol: This phrase literally means "to do as the devil" and could be used to describe someone who is acting in a foolish or reckless way.
* Fōrwit: This phrase means "curiosity" and could be used to describe someone who is naive or easily tricked.
* Gōn on hēafod: This phrase means "to go on head" and could be used to describe someone who is acting impulsively or recklessly.
It's important to note that these words and phrases often have broader meanings in Old English than their modern English equivalents. The specific meaning would depend on the context and the intended tone of the speaker.
Ultimately, the best way to understand the meaning of "silly" in Old English would be to examine the specific context in which it is used.