unsubstantial

adj.

1. Lacking material substance; insubstantial.
2. Lacking firmness or strength; flimsy.
3. Lacking basis in fact.

unsubstantiality un'sub·stan'ti·al'i·ty (-shē-ăl'ĭ-tē) n.
unsubstantially un'sub·stan'tial·ly adv.

adjective

1. Having no body, form, or substance: bodiless, discarnate, disembodied, immaterial, incorporeal, insubstantial, metaphysical, nonphysical, spiritual, unbodied, uncorporal. See body/spirit.
2. Not physically strong: decrepit, delicate, feeble, flimsy, fragile, frail, infirm, insubstantial, puny, unsound, weak, weakly. See strong/weak.
3. Having little substance or significance; not solidly based: feeble, flimsy, insubstantial, tenuous. See strong/weak.
4. Not plausible or believable: flimsy, implausible, improbable, inconceivable, incredible, shaky, thin, unbelievable, unconceivable, unconvincing, weak. See likely/unlikely.

Note: click on a word meaning below to see its connections and related words.

The adjective has one meaning:

Meaning #1: lacking material form or substance; unreal
  Synonyms: insubstantial, unreal

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Dansk (Danish)
adj. - ikke fyldestgørende, utilstrækkelig, uvirkelig, uholdbar, usolid

Nederlands (Dutch)
ongegrond, niet veel om het lijf hebbende, slap

Français (French)
adj. - mal étayé, fragile

Deutsch (German)
adj. - körperlos, leicht, unbegründet

Ελληνική (Greek)
adj. - επουσιώδης

Italiano (Italian)
inconsistente

Português (Portuguese)
adj. - insubstancial, irreal, frágil

Русский (Russian)
несущественный, невесомый, нереальный, непрочный, непитательный

Español (Spanish)
adj. - insustancial, sin fundamento, imaginario

Svenska (Swedish)
adj. - overklig, okroppslig, lätt, tunn, luftig, omotiverad, otillräcklig, torftig

中文（简体）(Chinese (Simplified))
无实体的, 薄弱的, 不坚固的

中文（繁體）(Chinese (Traditional))
adj. - 無實體的, 薄弱的, 不堅固的

한국어 (Korean)
adj. - 실체가 없는, 공상적인, 빈약한

日本語 (Japanese)
adj. - 実体のない, 中身のない, 軽い, 非現実的な

العربيه (Arabic)
‏(صفه) غير ملموس, , خيالي, غير مرض, غير مشبع‏

עברית (Hebrew)
adj. - ‮לא ממשי, לא מוצק, דמיוני, לא משביע רצון, לא משביע (אוכל), ללא בסיס עובדתי‬

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