同じく|おなじくonajiku[2]nakadaka (mid-high)

1. adverb, conjunctionin the same way; like; likewise; similarly
   私は空そらを飛とべないのと同おなじく泳およぐこともできない。↗

   I can no more swim than I can fly.

• Synonym同様どうようNeutralA neutral noun meaning 'the same; similar'. Its range of use is broader than 「同じく」.
• Synonym同様にどうようにWrittenA written, formal adverb for 'in the same way'. 「同じく」 is mostly used when listing, to carry over from the previous item, as in 「同じく〜も」.
• Synonym等しくひとしくWrittenA written adverb meaning 'equally, uniformly', as in 「等しく分ける」; it stresses even, impartial treatment.
• Antonym異なりWrittenA written noun for 'a difference'; the opposite of 「同じく」 and relatively rare.
• Antonym違ってNeutralThe te-form of 「違う」; usually as 「〜と違って」, 'unlike the previous item'. It is 「同じく」's opposite in same/different terms but cannot directly replace it.

Use 「同じく」 to carry over the previous item when listing, as in 「同じく反対だ」. In written prose prefer 「同様に」; for equal, even treatment use 「等しく」; 「同様」 has a broader range. To contrast, say 「〜と違って」; 「異なり」 is a rarer written opposite.

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

1. 同様どうように。