without breaking a sweat

Related

relaxed · cool · unfazed · nonchalant · breezy · casual · simple · cinch · waltz · cruise · glide · piece of cake · child's play · hands down · no problem · laid-back · composed · unruffled

Opposites
effort required

without breaking a sweatwith great difficulty

In a hard manner

by the skin of one's teeth · painstakingly · against all odds · arduously · barely

emotional/psychological strain

without breaking a sweaton pins and needles

In anxious suspense

white-knuckled · anxiously · panic-stricken · nervously · tensely

struggle and strain

without breaking a sweatsweating bullets

Intensely nervous or worried

in agony · running on fumes · pushed to the limit · worn out · dead on one's feet

Familiarity
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