私

1. pronoun, slightly formal or feminine I; me

わたくし

1. pronoun, usu. more formal than わたし I; me
2. takes の, noun personal (affairs, etc.); private
3. noun selfishness; partiality
4. secrecy; confidentiality

あたし · あたくし

1. pronoun, used by women, usually in kana, あたくし is more polite I; me

わらわ also 妾

1. pronoun, archaic, humble, used by women I; me

わし also 儂

1. pronoun, usually in kana, used by men, used by elderly I; me

あっし · わっし

1. pronoun, usually in kana, colloquial, mainly used by working men I; me

わい

1. pronoun, usually in kana, dated, Kansai-ben I; me
2. archaic, used to address someone of equal or lower status you

わたい

1. pronoun, archaic, Kantou-ben I; me

し

1. noun private affairs; personal matter

わっち

1. pronoun, colloquial, usually in kana, used esp. by people of low status I; me

わて

1. pronoun, usually in kana, Kansai-ben I; me

あたい

1. pronoun, used by women, children's language, usually in kana I; me

あて

1. pronoun, used by women, dated, usually in kana, Kansai-ben I; me

わちき

1. pronoun, archaic, used by women, mainly used by Edo-period prostitutes I; me