An ally; a person or group that supports or stands on one's side.
あの会社には強い味方がいるから安心だ。
I'm relieved because that company has powerful allies.
戦いでは仲間を味方につけることが大事だ。
In a fight, it's important to get your comrades on your side.
彼女はいつも私の味方で励ましてくれる。
She is always on my side and encourages me.
Taking sides with or supporting someone; backing someone up (to side with).
彼はいつも子どものほうに味方する。
He always sides with the child.
親が子どもの味方をするのは当然だと思う。
I think it's natural for parents to support their children.
弁護士が依頼人に味方してくれたおかげで助かった。
We were helped because the lawyer backed up the client.