/ ɪn; NAmE / (also em- / ɪm; NAmE / before b, m or p ) prefix (in verbs)
1.
to put into the thing or condition mentioned :
encase
endanger
empower
2.
to cause to be :
enlarge
embolden
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WORD ORIGIN
from French , from Latin in- . See also in- , a commonly found by-form.