well-grounded

Built on facts

Well-grounded means having a solid foundation in knowledge, training, or principles: She's well-grounded in classical music theory.

The term suggests thorough preparation rather than superficial familiarity.

It also describes someone emotionally stable and sensible—a person whose feet are firmly planted: Despite his fame, he remained remarkably well-grounded.

logical

reasoned

Derived through careful thought

  • coherentLogically connected throughout
  • cogentClearly logical and convincing
  • soundAudible wave phenomenon

valid · rational · systematic · methodical · rigorous · analytical · consistent · structured · deductive · inferential

credible

substantiated

Confirmed with evidence

validated · confirmed · proven · documented · supported · sourced · corroborated · authenticated · researched · referenced

stable

anchored

Fixed securely in position

secure · steady · firm · solid · settled · established · planted · founded · steadfast · unshakable

knowledgeable

informed

Given necessary knowledge

schooled · trained · experienced · competent · proficient · skilled · expert · literate · studied · prepared

practical

pragmatic

Focused on workable solutions

levelheaded · commonsensical · no-nonsense · matter-of-fact · clear-eyed · sober · judicious · shrewd · hardheaded · rational

Opposites
logical foundation

well-groundedgroundless

Lacking factual support

baseless · unfounded · unsound · invalid · illogical

educational/knowledge foundation

well-groundeduntrained

Lacking learned skills

unprepared · ill-prepared · uneducated · uninstructed · unschooled

psychological stability

well-groundedungrounded

Lacking factual basis

flighty · unstable · unrealistic · impractical · disconnected

Family

well, ground, background, underground, grounds, grounded, grounding, foreground, well-founded

Familiarity
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Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G