"halfway" in the adjective sense
1. center, halfway, middle, midway
equally distant from the extremes
2. halfway
at a point midway between two extremes
"at the halfway mark"
3. halfway
including only half or a portion
"halfway measures"
"halfway" in the adverb sense
1. halfway, midway
at half the distance at the middle
"he was halfway down the ladder when he fell"
Source: WordNet® (An amazing lexical database of English)
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