How to say "bulge" in Japanese

Choosing the right word
  • 盛り上がるもりあがるJLPT N1approx.Common
    godan verb, intransitive verbA verb for something swelling up or rising above its surroundings — ground heaving, a bump rising, a pile heaped high; the emphasis falls on upward swelling rather than puffing out.
    火山かざん活動かつどうで地面じめんが盛り上もりあがった。↗
    The surface of the earth rose due to the volcanic activity.
  • 膨らみふくらみCommon
    nounThe noun for the bulge itself: a rounded swelling or puff in or on something, used when you name or point to the swollen part rather than describe the act of swelling.
  • 隆起りゅうきCommon
    suru verb, intransitive verb, no-adjectiveA noun for a protuberance or projection — land or a surface rising to form a bump that juts out; it leans toward raised terrain and protruding bulges rather than soft puffiness.
  • 膨れるふくれるJLPT N1approx.Common
    ichidan verb, intransitive verbA verb for something swelling out or becoming inflated — a distended stomach, puffed-out cheeks; it pictures the thing itself puffing up with air or fullness.
    たくさん食たべたので腹はらが膨ふくれた。↗
    I've had enough, so my stomach is full.
  • 膨らますふくらますJLPT N2approx.Common
    godan verb, transitive verbThe verb for making something swell: to inflate or puff something out until it bulges, used when an agent causes the swelling rather than when it happens by itself.
    Yeast makes dough rise.

Use 「盛り上がる」 for something swelling or rising up, 「膨らみ」 for the bulge as a noun, 隆起 for a protuberance or projection, 「膨れる」 for swelling out on its own, and 「膨らます」 for inflating something.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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