Pronunciation: /ˈbaɪˌstændər/
noun A person who is present at an event or incident but does not take part in it.
A1 The bystander watched as the cat climbed the tree.
A2 The bystander called for help when they saw the car accident.
B1 The bystander provided a statement to the police about what they saw.
B2 The bystander intervened when they saw someone being bullied.
C1 The bystander's testimony was crucial in solving the crime.
C2 The bystander's quick thinking saved the child from drowning.
formal The bystander witnessed the accident and provided a statement to the police.
informal The bystander saw everything that happened and told me about it.
slang The bystander totally spilled the tea on what went down.
figurative She felt like a bystander in her own life, watching everything unfold without being able to participate.
bystood
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will stand by
have stood by
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to stand by
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