Here is the information you requested on "lethe":
1. **Parts of Speech:** noun
2. **Definitions:**
- (in Greek mythology) a river in Hades whose water, when drunk, caused forgetfulness of the past.
- oblivion or forgetfulness.
3. **Pronunciations:**
- US: /ˈliːθi/
- UK: /ˈliːθiː/
4. **Origin and Usage:**
- The word "lethe" comes from the Greek word "lēthē," meaning "forgetfulness" or "oblivion." In Greek mythology, Lethe was one of the five rivers of the underworld, and the souls of the dead were required to drink from its waters in order to forget their past lives before being reincarnated.
- In English, "lethe" is used to describe a state of forgetfulness or oblivion. It is often used in a metaphorical sense to describe a state of mind in which one has forgotten or is unaware of something important.
5. **Synonyms:** forgetfulness, oblivion, amnesia, memory loss, unawareness
6. **Related Words:**
- amens
- amuse
- antes
- ashen
- aspen
7. **Example Sentences:**
- She felt as though she had drunk from the river Lethe and could no longer remember her past.
- The passage of time had turned his memories to Lethe.
- The medication caused temporary lethe, and he couldn remember anything from the previous day.