spared no effort

Held nothing back

Sparing no effort is an idiom that people use to describe doing something as thoroughly and as completely as possible.

Related

relentless · left no stone unturned · toil · blood sweat and tears · hard work · assiduousness · burning the midnight oil · intensive · dedication · commitment · above and beyond · went the extra mile · diligence · thoroughness · perseverance · meticulousness · accomplishment · success

Opposites
degree of effort invested

spared no effortslacked off

Reduced one's effort

couldn't be bothered · coasted · cut corners · shirked · took it easy

commitment and dedication

spared no efforthalf-hearted

Lacking sincerity or zeal

indifferent · apathetic · lackadaisical · perfunctory · desultory

Family

spare, spared, sparing, sparingly, spares, effort, efforts, effortful, effortless

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G