Synonyms of 'in line'
▷ See line
2 under controlDictionary, in order, in check
All this was just designed to frighten me and keep me in line.
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If one thing is level with another thing, it is at the same height as it.
She knelt down so that their eyes were level.
Thesaurus for in line from the Collins English Thesaurus
If you are in line for something, it is likely to happen to you or you are likely to obtain it. If something is in line to happen, it is likely to happen.