“gatera” Meaning & Usage — While 〜, Also 〜 (on the way) [JLPT N1]

Content by NTJ Kuma · Nihongo to Japan editorial team · Updated July 27, 2026

“Do some shopping while out for a walk” — using the chance of one action to do another, with examples. (JLPT N1)

「散歩がてら、パン屋に寄った」 — one trip out, two errands done

To say “I bought bread while out for a walk,” 「散歩がてら、近所のパン屋に寄った」 (while taking a walk, I dropped by the neighborhood bakery) — 「〜がてら」 = while doing ～, taking the chance to also ～, used to express “using the occasion of doing one thing (the main purpose), naturally also doing another.” Its focus is “one action serving two purposes.” This guide covers attachment, the rule that the second half must be a “side” action, and separating it from 「ついでに／かたがた／ながら.」

Core: while doing A, also getting B done along the way

「verb ます-stem／noun ＋ がてら」 means “taking the chance of doing A (the main purpose), also doing B along the way”:

• 出張がてら、実家に顔を出した (while on a business trip, I dropped in on my parents).
• 買い物しがてら、図書館で本を返した (while shopping, I returned books at the library).
• 運動がてら、一駅分歩いて帰る (as exercise, I walk one station's distance home).

Feel: the core is “one action serving two purposes” — using the occasion of doing A (a walk, a business trip, shopping) to naturally also do B (buy bread, visit family, return books). A and B mostly overlap in place or time (one trip out, two things done together), so 「がてら」 gives a relaxed “no extra effort, on the way, in passing” feel. It corresponds to “while ～, on the way ～, taking the chance to also ～.”

How it attaches

Examples in use

• ドライブがてら、海沿いのカフェまで足を伸ばした。(On a drive, I extended the trip to a seaside café.)
• 挨拶がてら、近況を報告してきた。(While saying hello, I reported on my recent situation.)
• 気分転換しがてら、近所を一周した。(As a change of pace, I walked a loop around the neighborhood.)
• 通勤がてら、英語のポッドキャストを聞いている。(On my commute, I listen to English podcasts.)
• 墓参りがてら、久しぶりに故郷を歩いた。(While visiting the grave, I walked my hometown for the first time in a while.)

⚠️ Easy traps to avoid

① Attach the ます-stem or a noun, not the dictionary or て-form. This is the commonest attachment error. 「がてら」 precedes a verb ます-stem (drop ます) or an action-type noun: 散歩する→散歩しがてら (○ stem), 散歩がてら (○ noun); 買い物する→買い物しがてら／買い物がてら. It can't take the dictionary form or て-form: ✗ 散歩するがてら／✗ 散歩してがてら. Mnemonic: (verb ます-stem／action noun) ＋ がてら = while ～, also ～.

② The second half must be a ‘side' action, not as weighty as the first. This is 「がてら」's semantic limit. It expresses “taking the chance of doing A (the main purpose), also doing B (secondary)” — so the second half B must be an ‘incidental, secondary' action, not as weighty as A. Like buying bread while walking (buying bread is the incidental side thing), visiting family while on a trip (visiting is incidental) — all natural. But if both are equally weighty affairs, 「がてら」 doesn't work: ✗ 結婚するがてら、家を買う (marriage and buying a house are both life events — you can't say “buy a house while getting married”). Test: the second half is an “on-the-way, in-passing, no-extra-effort” side thing → がてら works; the second half is a weighty affair equal to the first → doesn't work.

③ Division of labor with 「ついでに／かたがた／ながら.」 These all relate to “in passing, at the same time,” but each has its emphasis. 「がてら」 = do B while doing A (A, B mostly same place/one trip, mid register, everyday-usable): 散歩がてら買い物. 「ついでに」 = in passing (do B incidentally on some occasion, more colloquial, B can be spur-of-the-moment): 出かけるついでに、郵便を出す (see 〈ついでに〉). 「かたがた」 = also, serving as (formal, written, mostly for greetings, thanks, weighty occasions): お礼かたがた、ご挨拶に伺う. 「ながら」 = while doing (two actions in parallel), no main/side (両者 truly simultaneous): 音楽を聞きながら勉強する. Difference: がてら／ついでに／かたがた are “do another thing in passing” (two things, one main one side); ながら is “do two things at once” (parallel, no main/side). Test: one trip to do a side thing → がてら (everyday)／ついでに (colloquial)／かたがた (formal); two actions in parallel → ながら.

🔄 Compare: がてら／ついでに／かたがた／ながら

💡 Quick takeaway

「〜がてら」 = while doing ～, taking the chance to also ～ (one action serving two purposes) — three points: ① attach the ます-stem or an action noun (散歩しがてら／散歩がてら, not the dictionary/て-form); ② the second half must be a “side” action, not as weighty as the first (✗結婚するがてら家を買う); ③ division of labor with 「ついでに (colloquial)／かたがた (formal)／ながら (simultaneous).」 — がてら／ついでに／かたがた do another side thing in passing, ながら does two things at once. 「がてら」's register is handy — between the purely colloquial 〈ついでに〉 and the formal written 〈かたがた〉, natural in everyday speech, blogs, essays. To relaxedly say “while ～, I also did ～ along the way,” 「〜がてら」 is the smoothest.

❓ Common questions

Q: Do 「散歩がてら」 and 「散歩のついでに」 mean the same?

Very close (both “while walking, in passing”), the difference is in nuance and register. 「〜がてら」 = do B while doing A (A a purposeful action, B done along the way, one trip): it stresses “using the occasion of doing A, also getting B done,” with A and B naturally done in one trip, same place, the feel being “on the way, in passing”: 散歩がてら、パン屋に寄る (drop by the bakery while walking — on the walk's route), 出張がてら、実家に寄る (visit family while on a trip). Its first half A is mostly a purposeful “moving, going out” action. 「〜（の）ついでに」 = in passing (using some occasion to incidentally do another thing): it's broader, more colloquial, stressing “since I'm doing A anyway, also do B,” with B often “thought of on the spot, incidental”: 買い物のついでに、クリーニングを取ってくる (pick up the dry cleaning while shopping — incidentally recalled), 出かけるついでに、これ出しといて (mail this while you're out) (see 〈ついでに〉). Difference: 「がてら」 leans “taking the chance of doing A (A, B mostly one trip, same place),” with an “on the way” feel; 「ついでに」 leans “since I'm doing A, incidentally do B,” more colloquial, broader, B can be spur-of-the-moment. In practice the two are often interchangeable (散歩がてら／散歩のついでに both work), but 「がてら」 has a slightly refined, written air (between colloquial and formal), while 「ついでに」 is the most everyday colloquial. Test: to say “on the way (while moving/acting) do ～” → がてら; to colloquially say “in passing do ～” → ついでに.

Q: 「がてら」 and 「ながら」 both translate as ‘while' — how do I tell them apart?

The difference is ‘do another thing in passing' vs ‘two actions in parallel at once.' 「〜がてら」 = do B while doing A (two things, one main one side, not necessarily at once): it's “using the occasion of doing A, also doing B” — A and B are two different things, one main (A) one side (B), and not necessarily simultaneous, possibly “doing B on the way during A”: 散歩がてら、買い物をする (shop while walking — walking is main, shopping incidental, possibly detouring to shop during the walk). The focus is “one action, two errands.” 「〜ながら」 = do A while doing B (two actions in parallel at once): it's “at the same time as doing A, also doing B” — two actions truly simultaneous, no main/side: 音楽を聞きながら、勉強する (study while listening to music — listening and studying happen at once), 歩きながら、電話する (phone while walking). The focus is “two actions in parallel at the same moment.” Difference: 「がてら」 is “do B while doing A” (two things, one main one side, not necessarily at once); 「ながら」 is “do A while doing B” (two actions truly parallel, no main/side). Test: to say “taking the chance/in passing to do another thing” (one main one side) → がてら; to say “at the same time do two actions” (parallel) → ながら. E.g. 「運動がてら、犬を散歩させる (walk the dog as exercise — exercise main, dog-walking incidental)」 uses がてら; 「テレビを見ながら、ご飯を食べる (eat while watching TV — simultaneous)」 uses ながら. One is “in passing,” the other “at once” — don't mix them.

🖊️ Practice Questions (5)

Q1. 「買い物___、図書館にも寄った。」（while out shopping, also stopped by）

(A) がてら　(B) どころか　(C) ばかりに　(D) ながらも

Q2. 「がてら」の前に来るのは?

(A) A verb ます-form stem / a noun

(B) Dictionary form

(C) ない-form

(D) た-form

Q3. 「散歩がてら買い物をする」の意味は?

(A) Do the shopping while taking a walk (both in one go)

(B) Shop long after the walk

(C) Don't take a walk

(D) Only shop

Q4. 「がてら」と「かたがた」の違いは?

(A) がてら = colloquial; かたがた = formal writing (attaches to a noun)

(B) The two are exactly the same

(C) がてら = the most formal

(D) かたがた = the most colloquial

Q5. 接法が正しいのは?

(A) 散歩がてら写真を撮った。　(B) 散歩するがてら (the stem is 散歩し)。

(C) 散歩してがてら。　(D) 散歩がてらを。

Answer Explanations

1. (A) がてら ── Stopped by the library while out shopping.

2. (A) ── A verb ます-form stem / a noun.

3. (A) ── Shop while taking a walk.

4. (A) ── がてら: colloquial; かたがた: formal writing.

5. (A) ── 「散歩がてら」 (a noun) is correct.