inform
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1. Give (someone) facts or information; tell.
he wrote to her, informing her of the situation
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2. Give incriminating information about someone to the police or other authority.
It repeated a call for offenders to surrender and for others to inform on them.
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3. Give an essential or formative principle or quality to.
Our local actions should be informed by three global principles.
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Origin
1. Middle English enforme, informe ‘give form or shape to’, also ‘form the mind of, teach’, from Old French enfourmer, from Latin informare ‘shape, fashion, describe’, from in- ‘into’ + forma ‘a form’.

