All insignificantly antonyms

adverb insignificantly

• significantly — important; of consequence.
• a lot — lot (def 14).
• considerably — to a noteworthy or marked extent; much; noticeably; substantially; amply.
• greatly — in or to a great degree; much: greatly improved in health.
• little — small in size; not big; not large; tiny: a little desk in the corner of the room.
• not at all — in no way, to no extent