The Word is:”my”
my
/mʌɪ/
determiner
possesive pronoun: my
1. belonging to or associated with the speaker.
“my name is John”
used with a name to refer to a member of the speaker’s family.
“my Johnny, see, he was smart”
“my dear boy”
2. used in various expressions of surprise.
“my goodness!”
Source credit: Google