Past Tense of “sew”
The past tense of sew is sewed; the past participle is sewn/sewed.
Why “sew” behaves this way
"Sew" comes from Old English "seowian," one of the oldest domestic-craft verbs in the language, describing the act of joining fabric with needle and thread. Like "saw," it takes a regular simple past ("sewed") but has a split participle: "sewn" is the more traditional irregular form, still common in both British and American English, while the fully regular "sewed" is also widely accepted as a participle, making "sew" a genuinely dual-form verb rather than following a strict regional split like "saw/sawn." Museums specializing in textile history frequently note whether a historical garment was hand-sewn or machine-sewn, since the distinction can help date an artifact to before or after the industrial adoption of sewing machines in the mid-19th century.
Unlike the "sawn/sawed" split, which leans heavily regional (British favoring "sawn," American favoring "sawed"), the "sewn/sewed" choice for "sew" is more a matter of individual and stylistic preference across both dialects, with "sewn" perhaps slightly more common in careful or formal writing ("hand-sewn," "machine-sewn") and "sewed" appearing comfortably in everyday spoken usage on both sides of the Atlantic. Historically, hand-sewing skill was considered an essential part of a well-rounded education for centuries before industrial sewing machines existed, and needlework samplers survive today as some of the oldest personal artifacts many museums hold.
The common confusion
Neither "has sewn" nor "has sewed" is wrong, which makes this a style choice rather than a true error — the only real advice is to pick one and hold to it across a single document, since switching mid-piece is what actually looks careless.
How it's actually used
"Sew" and its participle "sewn" appear heavily in fashion, textile, and craft writing ("hand-sewn details," "machine-sewn seams"), where "sewn" often functions as a quality-signaling adjective distinguishing careful handwork from mass production. Medical writing uses "sew" in a specialized surgical sense (stitches, "the wound was sewn shut"), a usage close to but more precise than everyday textile sewing. Historical reenactment communities place high value on garments sewn using period-accurate techniques, treating hand-sewn construction as a mark of authenticity distinct from modern machine work. A steady hand and a sharp needle still matter more than any machine when sewing delicate fabric. A garment sewn slightly too tight can be let out by a good tailor, but one sewn too small often cannot be saved at all. A costume sewn under deadline pressure rarely gets the same careful finishing as one made months in advance. A patch sewn crookedly onto a jacket sleeve is often more noticeable than the tear it was meant to fix.
Across the tense system
The simple past is always "sewed" (never an irregular alternative), while the participle can be either "sewn" or "sewed" — a genuinely optional choice, unlike verbs where only one participle form is accepted. Craft tutorials most often use the imperative or infinitive ("sew the two pieces together") rather than any past-tense form, since instructional writing describes steps to be performed rather than steps already completed.
Common real mistakes
There is no strict error between "sewn" and "sewed" as participles, but writers should avoid inconsistency within the same document, and should never use "sewn" as the simple past tense ("she sewn the dress" is incorrect; it must be "sewed"). A further point: "sew" should never be confused with the unrelated homophone "sow" (to plant seeds), two entirely different verbs that happen to sound identical in most English dialects.
Examples
- She sewed the torn hem back together in minutes.
- The quilt had been hand-sewn by her grandmother decades earlier.
- He has sewed dozens of costumes for the community theater.
- The tailor sewed a new lining into the old coat.
- The surgeon sewed the incision closed with dissolvable stitches.
- She sewed name tags into every piece of her son's camp clothing.
- The reenactor's coat was entirely hand-sewn using an eighteenth-century pattern.
Memory trick
Remember the simple past is always "sewed," while the participle can go either way — "sewn" for a slightly more polished, craft-forward feel, "sewed" for a plainer, everyday tone.