योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-77, verse-21

उह्यमानशिलाजालप्रहारविलुठत्तटैः ।
पतल्लोकान्तरैः स्फारदुष्कालकटुटांकृतम् ॥ २१ ॥

uhyamānaśilājālaprahāraviluṭhattaṭaiḥ ,
patallokāntaraiḥ sphāraduṣkālakaṭuṭāṃkṛtam 21

21. uhyamānaśilājālaprahāraviluṭhattataiḥ
patallokāntaraiḥ sphāraduṣkālakaṭuṭāṅkṛtam

21. uhyamānaśilājālaprahāraviluṭhattataiḥ
patallokāntaraiḥ sphāraduṣkālakaṭuṭāṅkṛtam

21. The scene is characterized by banks that are tumbling due to the impact of masses of floating rocks, and by falling other worlds; all accompanied by the vast, harsh, twanging sound of a calamitous time.

Words meanings summery:

• उह्यमानशिलाजालप्रहारविलुठत्ततैः (uhyamānaśilājālaprahāraviluṭhattataiḥ) - by banks tumbling due to the impact of masses of carried stones

• पतल्लोकान्तरैः (patallokāntaraiḥ) - by falling other worlds; by other worlds that are falling

• स्फारदुष्कालकटुटाङ्कृतम् (sphāraduṣkālakaṭuṭāṅkṛtam) - the vast, harsh twang of a calamitous time; characterized by a vast, harsh twang of a calamitous time

Words meanings and morphology

उह्यमानशिलाजालप्रहारविलुठत्ततैः (uhyamānaśilājālaprahāraviluṭhattataiḥ) - by banks tumbling due to the impact of masses of carried stones

(adjective)

Instrumental, masculine, plural of uhyamānaśilājālaprahāraviluṭhattata

uhyamānaśilājālaprahāraviluṭhattata - characterized by banks tumbling due to impacts of floating rock masses

Compound type : tatpuruṣa (uhyamānaśilājālaprahāraviluṭhat+taṭa)

• uhyamāna – being carried, borne along
  participle (masculine)
  Present Passive Participle
  From root `vah` (to carry) in passive voice, with `śānac` suffix.
  Root: vah (class 1)
• śilā – stone, rock
  noun (feminine)
• jāla – net, collection, mass, multitude
  noun (neuter)
• prahāra – strike, impact, blow
  noun (masculine)
  From `pra-√hṛ`.
  Prefix: pra
  Root: hṛ (class 1)
• viluṭhat – rolling, tumbling
  participle (masculine)
  Present Active Participle
  From `vi-√luṭh` (to roll, tumble) with `śatṛ` suffix.
  Prefix: vi
  Root: luṭh (class 6)
• taṭa – bank, shore, side
  noun (masculine)

Note: This adjective in the instrumental plural describes an implied noun.

पतल्लोकान्तरैः (patallokāntaraiḥ) - by falling other worlds; by other worlds that are falling

(adjective)

Instrumental, masculine, plural of patallokāntara

patallokāntara - falling other worlds, other worlds that are falling

Compound type : karmadhāraya (patat+lokāntara)

• patat – falling
  participle (masculine)
  Present Active Participle
  From root `pat` (to fall) with `śatṛ` suffix.
  Root: pat (class 1)
• lokāntara – other world, different realm
  noun (neuter)

Note: This adjective in the instrumental plural describes an implied noun.

स्फारदुष्कालकटुटाङ्कृतम् (sphāraduṣkālakaṭuṭāṅkṛtam) - the vast, harsh twang of a calamitous time; characterized by a vast, harsh twang of a calamitous time

(adjective)

neuter, singular of sphāraduṣkālakaṭuṭāṅkṛta

sphāraduṣkālakaṭuṭāṅkṛta - characterized by a vast, harsh twang of a calamitous time

Compound type : bahuvrīhi (sphāra+duṣkāla+kaṭu+ṭāṅkṛta)

• sphāra – vast, extensive, loud, expanding
  adjective (masculine)
• duṣkāla – bad time, calamitous time, famine
  noun (masculine)
  Prefix: dus
• kaṭu – harsh, bitter, pungent
  adjective (masculine)
• ṭāṅkṛta – twang, harsh sound, producing a twang
  noun (neuter)
  Past Passive Participle (possibly used as noun)
  From root `ṭāṅ-√kṛ` (to make a twanging sound).
  Root: kṛ (class 8)

Note: This adjective in the neuter singular could be nominative, or accusative functioning adverbially to describe the manner or outcome of the described phenomena.