実際は|じっさいはjissaiha[0]heiban (flat)

1. expression, adverbin fact; as a matter of fact; actually; in reality; to tell the truth

• Synonym事実上じじつじょうNeutralNeutral but leaning formal: the actual state or effect as opposed to the nominal one, as in 「事実上の決定」.
• Synonym実質的にはNeutralNeutral but leaning formal; not a set phrase. Focuses on the substance of things rather than the name they carry.
• Related実際上はWrittenWritten/formal prose. Views things from the practical, in-practice angle; it cannot stand in for 「実際は」 in every context.
• Antonym理論上はNeutralNeutral. In theory, as in 「理論上は可能」; it stands opposite 「実際は」, which is about how things actually are.
• Antonym建前上はNeutralNeutral. On the surface or in name, as in 「建前上は禁止」; the opposite of 「実際は」, which gives the real state of affairs.

To state the truth behind appearances, use 「実際は」, as in 「実際は違う」; in colloquial speech 「本当は」 is the natural pick. To stress the actual state or effect apart from the nominal one, use 「事実上」.

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

1. 見た目みためや話はなしとは違ちがって、本当ほんとうのところは。