fathomless
Impossible to plumb
Fathomless means too deep to measure.
A fathom is a unit of depth (six feet), so the fathomless cannot be fathomed—literally bottomless.
The word appears most often in figurative contexts: fathomless grief, fathomless mystery, eyes of fathomless blue.
It suggests depth beyond comprehension, something that resists being fully known or understood.
Immeasurably profound depth
trench · unplumbed · nadir · plunge · benthic · submersible · immeasurable · soundings
Without any boundaries
- limitlessWithout any boundaries
- immeasurableBeyond any quantification
- infiniteHaving no bounds
- endlessWithout termination or boundary
measureless · unbounded · expansive · immense · incalculable · inexhaustible · interminable · unending
Puzzling and obscure
- inscrutableImpossible to understand
- crypticObscure in meaning
- arcaneUnderstood by few
- inexplicableCannot be accounted for
impenetrable · opaque · unknowable · hidden · veiled · obscure · sphinxlike · perplexing
Good judgment from experience
- knowledgeUnderstood facts and skills
- insightDeep perceptive understanding
- understandingMental comprehension of something
- contemplationSustained reflective attention
profundity · erudition · sagacity · discernment · complexity · abstraction · philosophy · thought
abyss
Immeasurably profound depth
pit · trench · unplumbed · nadir · plunge · benthic · submersible · immeasurable · soundings · leagues
boundless
Without any boundaries
- limitlessWithout any boundaries
- immeasurableBeyond any quantification
- infiniteHaving no bounds
endless · measureless · unbounded · expansive · immense · incalculable · inexhaustible · interminable · unending · vast
enigmatic
Puzzling and obscure
- inscrutableImpossible to understand
- crypticObscure in meaning
- arcaneUnderstood by few
inexplicable · impenetrable · opaque · unknowable · hidden · veiled · obscure · sphinxlike · perplexing · mystifying
wisdom
Good judgment from experience
- knowledgeUnderstood facts and skills
- insightDeep perceptive understanding
- understandingMental comprehension of something
contemplation · profundity · erudition · sagacity · discernment · complexity · abstraction · philosophy · thought · mind
grief
Intense sorrow from loss
love · sadness · melancholy · yearning · devotion · loss · heartache · anguish · profundity · soul
- Beyond Measureimmeasurable, incalculable, boundless, limitless, infinite
- Infinityinfinity, endless, eternal, boundless, limitless
- ocean depthsshallow, deep, abyss, deep sea, deep ocean
- depthsabyss, deep, bottom, chasm, depth
- Darknessblackness, pitch black, pitch-black, inkiness, murk
- Scalevast, immense, huge, enormous, massive
fathomlessshallow
Without much depth
shoal · knee-deep · ankle-deep · superficial · depthless
fathomlesscomprehensible
Able to be understood
fathomable · understandable · knowable · graspable · intelligible
fathomlessfinite
Having definite bounds
bounded · limited · measurable · circumscribed · confined