Translation guide
To support or align with one person, group, or side in a conflict, argument, or dispute.
Express taking someone's side in an argument, fight, or dispute.
The most common and natural way to say 'side with someone'. Literally 'do someone's ally'.
He always sides with his younger brother.
Express agreement or alignment with someone's viewpoint.
General term for agreeing with someone. Can be used when siding with an opinion.
Both mean 'side with', but 味方をする is more common in everyday speech and implies emotional support. 側につく is slightly more formal and can imply a strategic alignment.
My mother always sides with me.
I'll side with you.
Literally 'attach to someone's side'. Slightly more formal or written than 味方をする.
He sided with the company president.
Means 'support' in a more formal or political sense. Can be used for siding with an opinion or policy.
He sided with the new policy.
Implies taking part in something, often with a negative connotation (e.g., siding with the wrong party).
He sided with the enemy.
I side with his opinion.
Literally 'have the same opinion as ~'. Casual and direct.
I side with you on this.
彼は選挙で与党の側についた。
He sided with the ruling party in the election.
Do not translate 'side with' literally as 側にいる (to be at someone's side physically). Use the phrases above to express support in a conflict.