“Side effect” in Japanese
Short answer
Side effect in Japanese is “副反応” (fukuhannou). Full meaning: side effect (of a vaccine); side reaction.
Other ways to say “Side effect” in Japanese
副作用
fukusayou side effect, adverse reaction
付随現象
fuzuigenshou side effect, concomitant
副産物
fukusanbutsu by-product; spin-off, outgrowth, side effect, consequence
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