CONTRONYMS III

Contronyms are self-contradicting words, or auto-antonyms. There are thousands of words in English that have more than one meaning (homographs). But a contronym is a single word that has two opposite meanings. SANCTION, for example, can mean both to approve and to condemn.

Can you determine the word or phrase that can satisfy both definitions below?

1. Harden or soften
2. Harm or help
3. Die or begin
4. Hello or farewell
5. Solemn promise or profane words
6. To have "watchdog" responsibility or a failure to be watchful and responsible

Answers:

1. Temper
2. Fix
3. Kick off 
4. Aloha / Shalom / Ave
5. Oath
6. Oversight