Showing unmatched word in elasticsearch results
You could use named queries for this, by giving a name to each of your queries. In the results, each hit will feature a matched_queries array containing the names of the queries that matched (e.g. unmatched_query and strikethrough_query below). You can then use that info on the client-side to build a strikethrough list of words which didn't match.
{ "query": { "bool": { "should": [ { "match": { "content": { "query": "unmatched", "_name": "unmatched_query" } } }, { "match": { "content": { "query": "strikethrough", "_name": "strikethrough_query" } } } ] } }}