Past Tense of “fling”
The past tense of fling is flung; the past participle is flung.
Why “fling” behaves this way
"Fling" wasn't originally an English word at all — it was borrowed from Old Norse "flengja," meaning "to flog" or "to hurl," and entered Middle English around the 1200s during the period of heavy Norse-English contact in the Danelaw regions of England. "Have a fling" as an idiom for a brief, casual romance, and the "Highland fling" as the name of a traditional Scottish solo dance, both use "fling" as a noun rather than a verb, drawing on the same sense of vigorous, energetic motion that gave the verb its "hurl" meaning centuries earlier.
Even though it arrived as a loanword rather than descending from Old English, "fling" was reshaped by analogy to match native strong verbs that already followed the same pattern — "sing/sung," "cling/clung," "sting/stung," "string/strung" — a small cluster of verbs ending in "-ing" that all share the identical "i" to "u" vowel shift. "Fling" essentially joined a native irregular class after the fact rather than inheriting its irregularity from deep history, which is a genuinely unusual path for a loanword to take.
The common confusion
Because "fling" so closely resembles "sling," "cling," and "sting" in both sound and conjugation, the past tense "flung" rarely trips anyone up — the confusion, if any, tends to be about register: "fling" and "flung" sound more forceful and casual than a neutral verb like "threw," so writers sometimes reach for it without meaning to imply extra violence or carelessness. A further wrinkle is regional: "fling" as a lively solo dance survives mainly in Scottish and broader British usage, while American English speakers are more likely to only recognize the romantic-affair sense of the noun, occasionally causing brief confusion in cross-dialect conversation.
How it's actually used
"Fling" implies a sudden, forceful, often careless motion, distinguishing it from the neutral "threw" — a ball is thrown, but a door is flung open, a phrase that carries emotional weight the plainer verb doesn't. "One last fling" before a major life change (marriage, a new job) is a genuinely old idiomatic use, treating a final burst of freedom as a kind of energetic, careless throw of oneself into enjoyment — the same underlying image of forceful, unrestrained motion that drives every sense of the word.
Across the tense system
The participle "flung" is identical to the simple past, so "has flung," "had flung," and the plain past "flung" never require separate memorization — one irregular form covers every non-present tense. In narrative fiction, "flung" often appears in quick succession within action sequences ("she flung the door open, flung her bag aside, and flung herself onto the bed"), a stylistic tic writers use deliberately for rhythm and urgency rather than variety, since repeating the same strong verb reads as more forceful than switching synonyms mid-scene. Sports journalism sometimes borrows "flung" for a dramatic long throw or pass ("flung a fifty-yard pass downfield"), favoring its forceful connotation over the more neutral "threw."
Common real mistakes
Because "fling" also exists as a noun meaning a brief romantic affair ("they had a fling") or a lively dance ("the Highland fling"), writers sometimes accidentally reach for the verb's irregular past tense "flung" when they actually need the regular noun-derived phrase "had a fling," producing an odd mismatch like "they flung last summer" instead of the intended meaning.
Examples
- She flung the door open and stormed inside.
- He has flung himself into every project with total energy.
- They flung mud at each other during the festival.
- The bag was flung across the room in frustration.
- I've flung caution to the wind more than once this year.
- He flung his arms wide and laughed.
- The horse flung its rider into the mud.
- She had flung the letter into the fire before reading it.
- They decided to have one last fling before settling down.
- He flung the ball across the field in one motion.
Memory trick
Chain it with its sound-alike cousins: sing/sung, cling/clung, sting/stung, fling/flung — say all four together and the "-ing" to "-ung" swap becomes an automatic reflex rather than four separate rules.