An interjection is a short exclamation that expresses emotion. An interjection is a part of speech that shows the emotion or feeling of the author. Most important interjections list;
Aah: Exclamation of fear
Ahh: Realization or acceptance
Aww: Something sweet or cute
Bingo: Acknowledge something as right
Eh: Question something
Uh oh: Showing dismay
Whew: Amazement and/or relief
Wow: Expressing surprise or admiration
Yay/Yaay: Congratulatory exclamation
Yeah: Variant of yes
Yikes: For fear or concern (not serious)
Yippee: Exclamation of celebration
Uh: Indicates a pause / need for more time
Hmm: Thinking / Hesitating about something
Er: Not knowing what to say
Um: Pausing or being skeptical
Eww: Something disgusting
Hmph: To indicate displeasure
Oh: I see / I think
Oops: Making a mistake
Ouch: Exclamation of pain
Shh: An indication for silence