unsoundly

In flawed fashion

In a manner that is flawed, weak, or lacking solid foundation.

The word typically modifies reasoning, judgment, or structural integrity: The argument was unsoundly constructed.

Someone who sleeps unsoundly wakes frequently or rests poorly.

A building unsoundly built may collapse.

illogical

fallaciously

In an illogical manner

incoherently · unreasonably · absurdly · nonsensically · groundlessly · baselessly · contradictorily · unjustifiably · fallaciousness · spuriously

structurally

unstably

Without firmness or balance

flimsily · weakly · fragilely · insecurely · defectively · faultily · dangerously · riskily · tenuously · vulnerably

unhealthily

fitfully

In irregular bursts

brokenly · lightly · intermittently · wakefully · troubled · insomnia · sleeplessness

Opposites
structural integrity/stability

unsoundlysoundly

In thorough manner

solidly · sturdily · securely · firmly · stably

logical/argumentative validity

unsoundlysoundly

In thorough manner

validly · logically · rationally · cogently · reasonably

health/physical condition

unsoundlyhealthily

In beneficial manner

soundly · robustly · vigorously · wholesomely · hale and hearty

Phrases
Family

unsound, unsoundness, unsounded

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G