The term "more contributing" implies an action that adds value or makes a greater impact. The antonyms for this concept would be actions that detract or diminish value. Words such as hindering, impeding, thwarting, obstructing, and undermining all negate the idea of contributing more. Opposite words for "more" include less, fewer, reduced, and minimal. Synonyms for "contributing" that imply reducing include disrupting, diminishing, negating, diminishing, or impairing. When we use antonyms for "more contributing," we mean activities that counteract or negate positive contributions, thereby hampering productivity and progress. Ultimately, such antonyms denote a lack of progress, growth, or development.