"I'm boring": why English makes you call yourself dull

You're forty minutes into a video call with the Chicago team, someone asks how you're doing, and you answer without thinking: "Honestly, I'm boring." Awkward silence. You just told them you're a dull person, not that you're getting bored.

The rule that fixes it fits on one line: the -ing form names what causes the feeling, and the -ed form names the person who feels it. The meeting is boring; you're bored. Sean Sutherland of the University of Westminster puts it this way: "typically the -ing form describes a cause and the -ed form describes an effect." Cambridge's grammar reference agrees: -ing adjectives describe the effect something has, and -ed adjectives describe how a person feels.

Think of the feeling as something that travels from one place to another. Whatever sends it out (a movie, a class) takes -ing. The person who receives it takes -ed. If the sentence is about you and what you feel, you need -ed.

"I'm boring" or "I'm bored"?#

Wrong: "This lecture is so long, I'm boring."
Right: "This lecture is so long, I'm bored."

Cambridge lists this exact slip among its common mistakes in English: "he was boring" when the speaker meant he felt bored. "I'm boring" is a grammatical sentence. It just says something else: that other people get bored around you.

Lucía falls into this trap at a hostel in Edinburgh. After two rainy days she posts in the hostel group chat: "I'm so boring, anyone up for a pub?" The reply comes in seconds: "You don't seem boring to us!"

A study of university students in Spain pinpoints where the rule breaks. Makiko Hirakawa and Kazunori Suzuki asked 36 Spanish learners of English to match sentences to pictures using pairs like bored/boring and frightened/frightening. In the high-intermediate group, 90% were consistently right on -ed, but only 20% on -ing. When they had to judge sentences where -ing described the person feeling the emotion, they accepted them as correct 52% of the time. That's the "I'm boring" error, caught in a comprehension test.

Hirakawa and Suzuki's data also show the problem fades with level. In the advanced group, consistency reached 100% on -ed and 62.5% on -ing, close to native speakers. Hirakawa and Suzuki conclude that the -ing type "would be more difficult for L2 learners but it can be acquired."

Why Spanish trips you up right here#

Spanish splits almost all of these pairs the same way English does: interesante vs. interesado, emocionante vs. emocionado, sorprendente vs. sorprendido. Hirakawa and Suzuki say it plainly in their paper: Spanish psych adjectives "behave similarly to English," with the two types "marked with different morphology."

The trap lives in a few very common words where one form covers both meanings. In the RAE dictionary, the adjective aburrido means "that causes boredom", in other words boring; the bored sense comes from the participle of aburrir used with estar. Cansado works the same way: the trip es cansado and you estás cansado. Spanish does have aburridor, "that bores," but almost nobody uses it. In your head, aburrido gives no hint which English form you need.

This mistake isn't unique to Spanish speakers. Studies of Chinese, French, Japanese and Thai learners find the same pattern: Itsara Namtapi tested 56 Thai students at three proficiency levels, and every group did better with -ed than with -ing.

Word frequency doesn't explain why -ing is harder. In the British National Corpus, Hirakawa and Suzuki report, boring shows up 1659 times and bored 1477, while frightened (2533) far outnumbers frightening (1002). The authors write that frequency "cannot explain our results fully." The hard form is the one that names the cause.

"I'm interesting in" or "I'm interested in"?#

Wrong: "I'm interesting in the marketing position."
Right: "I'm interested in the marketing position."

Cambridge lists "I'm interesting in theatre" among its common mistakes. Interested describes how you feel about something, and it's almost always followed by in. Interesting describes the thing that sparks that interest.

In a video interview with a Toronto staffing agency, Andrés opens with "I'm very interesting in this job." The recruiter hears that he's fascinating, not that he wants the role.

The ser/estar rule, and where it breaks#

Plenty of sites teach a shortcut: -ing goes with ser and is permanent, -ed goes with estar and is temporary. It works as a memory trick for aburrido (es aburrido = boring, está aburrido = bored) and not much else. As a rule of English, it fails.

Duration decides nothing. Tuesday's meeting was boring for one hour. "I've been bored with this job for years" describes something that lasts for years. What decides is who causes the feeling and who feels it.

The other classroom shortcut, -ing for things and -ed for people, doesn't hold up either. A person can be boring, annoying or charming. Linguist Boryana Ruzhekova-Rogozherova writes that this commonly practiced explanation "turns out to be quite limited and not entirely valid." That's why "I'm boring" is a perfectly grammatical self-insult.

Three more pairs: exciting, confusing, tiring#

Wrong: "Tomorrow I fly to New York, I'm so exciting!"
Right: "Tomorrow I fly to New York, I'm so excited!"

Valentina blurts it out to her host family in Boston the night before the trip. She meant she can't wait; she said she's thrilling to be around. The trip is exciting; she's excited.

Wrong: "Sorry, I'm confusing, which platform for Brighton?"
Right: "Sorry, I'm confused, which platform for Brighton?"

At London's Victoria station, Diego asks the conductor and confusing comes out: he just said he's hard to make sense of. The departures board is confusing; Diego is confused.

Wrong: "After the night shift I'm so tiring."
Right: "After the night shift I'm so tired."

Camila, a nurse in Houston, says it to a coworker at 7 a.m. and sounds like exhausting company. Same cansado trap: the shift is tiring; Camila is tired.

Does "I'm bored" come out on the first try, without a detour through boring? Tabla has you say lines like these out loud, scores what you say on the spot, and brings them back right before you'd forget them.

Fill in the blanks: "The documentary about tax law was so ___ that halfway through I was completely ___." Does each blank take boring or bored?

First boring, then bored. The documentary causes the boredom, so it takes -ing; you're the one who feels it, so you take -ed.

Try this today: type three sentences about your day on your phone using bored, tired and excited, then read them out loud, checking that each one describes what you feel, not what caused it.