Synonyms of diminishing

Verb

1. decrease, diminish, lessen, fall, change magnitude

usage: decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"

2. diminish, belittle, decrease, lessen, minify

usage: lessen the authority, dignity, or reputation of; "don't belittle your colleagues"

Adjective

1. diminishing, decreasing (vs. increasing)

usage: becoming smaller or less or appearing to do so; "diminishing returns"; "his diminishing respect for her"