List of acronyms begin with ‘I’:
- IA -- I Agree
- IAC -- In Any Case
- IAE -- In Any Event
- IAG -- It's All Good
- IAL -- I Ain't Laughing, I Actually Laughed
- IAS -- In A Second
- IAW -- In Accordance With, I Agree With
- IAWTC -- I Agree With This Comment, I Agree With That Comment
- IAWTCSM -- I Agree With This Comment So Much
- IB -- I'm Back
- IB2D, IBTD -- I Beg To Differ
- IBTL -- In Before the Lock
- IBYP -- I Beg Your Pardon
- IC -- I See
- ICAM -- I couldn't agree more
- ICB -- I Can't Believe
- ICBB -- I can't be bothered
- ICBI -- I Can't Believe It
- ICSL -- I Can't Stop Laughing, I Couldn't Stop Laughing
- ICYDK -- In Case You Didn't Know
- ID -- Identity
- IDBI -- I Don't Believe It
- IDC -- I Don’t Care
- IDD -- Indeed
- IDEK -- I Don't Even Know
- IDGI -- I Don't Get It
- IDI -- I Doubt It
- IDK -- I Don't Know
- IDKY -- I Don't Know Why
- IDLE -- Inactive
- IDLI -- I Don't Like It
- IDLY -- I Don't Like You, I Don't Love You
- IDM -- It Doesn't Matter
- IDN, IDUNNO -- I Don't know
- IDR -- I Don't Remember
- IDRC -- I Don't Really Care
- IDRK -- I Don't Really Know
- IDT -- I Don't Think
- IDTS -- I Don't Think So
- IDU -- I Don't Understand
- IDWTAI -- I Don't Wanna Talk About It
- IGHT, IIGHT -- Alright
- IGI -- I Get It
- IGM -- I Got Mine
- In Game Name
- IGNB -- I'm Going Now, Bye
- IGNTS -- I've Got Nothing To Say
- IGS -- I Guess So
- IGTG -- I got to go
- IGU -- I Give Up
- IH8U -- I Hate You
- IHML -- I Hate My Life
- IHNC -- I have no clue
- IHNI -- I Have No Idea
- HIS -- I Hope So
- IHT -- I Hate This
- IHU, IHY -- I Hate You
- IHYSM -- I Hate You So Much
- IIRC -- If I Remember Correctly
- IJ -- I'm Joking
- IJWTK -- I Just Want To Know
- IK -- I Know
- IKHYF -- I Know How You Feel
- IKMTY -- I Know More Than You
- IKR -- I Know, Right
- IKT -- I Knew That
- IKWUM -- I Know What You Mean
- IKWYL -- I know where you live
- IKY -- I Know You
- IL -- In Love
- ILH -- I Love Her, I Love Him
- ILI -- I Love It
- ILML -- I Love My Life
- ILMO -- In Loving Memory Of
- ILU, ILY -- I Love You
- ILU2, ILY2, ILYT -- I love you too
- ILUSM, ILYSM -- I love you so much
- ILYA -- I Love You All
- ILYAAF -- I Love You As A Friend
- ILYB -- I Love You Both
- ILYF -- I'll Love You Forever
- ILYG -- I Love You Girls, I Love You Guys
- ILYK -- I'll Let You Know
- ILYL -- I love you lots
- ILYLAS -- I Love You Like A Sister
- ILYLT -- I Love You Long Time
- ILYM -- I Love You More
- ILYSDM -- I Love You So Damn Much
- ILYVM -- I Love You Very Much
- IMAHO -- In My Absolutely Honest Opinion
- IMAO -- In My Arrogant Opinion
- IMB -- I'm Bored
- IMBO -- in My Biased Opinion
- IMCO -- In My Considered Opinion
- IME -- In My Experience
- IMEO -- In My Educated Opinion
- IMF -- International Monetary Fund
- IMH -- In My Head
- IMHO -- In My Humble Opinion
- IMING -- Instant Messaging
- IMK -- In My Knowledge
- IMMAO -- In My Most Arrogant Opinion
- IMNSHO -- In My Not So Humble Opinion
- IMO -- In My Opinion
- IMOO -- In My Own Opinion
- IMU, IMY -- I miss you
- IMYA -- I miss You Already
- IMYSM -- I Miss You So Much
- INB -- I'm Not Bothered
- INBD -- It's no big deal
- INK -- I Never Knew
- INNIT -- Isn't It
- INO -- I Know
- INORITE -- I Know, Right?
- INPO -- In No Particular Order
- INT -- Isn't it
- INVU -- I envy you
- IOI -- Indication of Interest, I'm Over It
- IOU -- I Owe You
- IOW -- In Other Words
- IP -- Internet Protocol, Intellectual Property
- IQ -- Intelligence Quotient
- IRC -- Internet Relay Chat
- IRDC -- I Really Don't Care
- IRDK -- I Really Don't Know
- IRL -- In Real Life
- ISB -- I'm So Bored
- ISLY -- I Still Love You
- ISO -- In Search Of
- ISP -- Internet Service Provider
- ISS -- I'm So Sorry
- ISTM -- It Seems To Me
- ISTR -- I Seem To Recall
- ISWYDT -- I See What You Did There
- ISWYM -- I See What You Mean
- ITA -- I Totally Agree
- ITALY -- I Trust And Love You
- ITC -- In That Case
- ITE -- Alright?
- ITK -- In The Know
- ITMA -- It's That Man Again
- ITN -- I Think Not
- ITS -- I Think So, I Thought So
- ITT -- In This Thread
- ITTET -- In These Tough Economic Times
- ITYF -- I Think You'll Find
- ITYL -- I'll Tell You Later
- ITYM -- I Think You Mean
- IWALY -- I Will Always Love You
- IWHI -- I Would Hit It
- IWIK -- I Wish I Knew
- IWM -- It Wasn't Me
- IWTD -- I Want To Die
- IYA -- Hiya, hello
- IYAM -- If You Ask Me
- IYBTYBA -- If You Believe That You'll Believe Anything
- IYD -- In Your Dreams
- IYDK -- If You Didn't Know
- IYDM -- If You Don't Mind
- IYF -- In Your Face
- IYKWIM -- If You Know What I Mean
- IYO -- In Your Opinion
- IYSS -- If You Say So
- IYSWIM -- If You See What I Mean
- IYTT -- If You Think That
- IZ -- Is, it's
