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to match (rhythm, speed, etc.)
to join together; to unite; to combine; to add up
to face; to be opposite (someone)
to compare; to check with
to cause to meet (e.g. an unpleasant fate)
to place together; to connect; to overlap
to mix; to combine
to put blade to blade; to fight
電波時計の時刻を正確に合わせた。
I set the time on the radio-controlled clock.
二人で息を合わせて美しいハーモニーで歌った。
We sang in unison together.
服の色を合わせてコーデした。
I coordinated by matching clothing colors.