How to say "auxiliary" in Japanese
Choosing the right word
- 副ふくnoun, prefixCovers the 'assistant, associate, vice-, sub-' senses of 'auxiliary': something that stands next to the main one as its second. It is a common word.
- 補助的ほじょてきna-adjectiveCovers the 'auxiliary, supplementary, subsidiary, ancillary' senses: it describes something that supports or supplements a main thing rather than being the main thing itself. It is a less common word.
Use 副 for the 'assistant, associate, vice-, sub-' sense of being second to a main one, and 補助的 for the 'auxiliary, supplementary, subsidiary, ancillary' sense of supporting a main thing; 補助的 is the less common of the two.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
See also
