योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-11, verse-21

तथा च संभ्रमस्वप्नमिथ्याज्ञानादिभासुराः ।
गन्धर्वनगराकारा दृष्टा मनसि शक्तयः ॥ २१ ॥

tathā ca saṃbhramasvapnamithyājñānādibhāsurāḥ ,
gandharvanagarākārā dṛṣṭā manasi śaktayaḥ 21

21. tathā ca saṃbhramasvapnamithyājñānādibhāsurāḥ
gandharvanagarākārāḥ dṛṣṭāḥ manasi śaktayaḥ

21. tathā ca śaktayaḥ manasi dṛṣṭāḥ
saṃbhramasvapnamithyājñānādibhāsurāḥ gandharvanagarākārāḥ

21. And similarly, within the mind (manas), certain powers (śakti) are observed; these appear brilliant, akin to confusion, dreams, false knowledge, and the like, and take the form of mirage-cities (gandharva-nagara).

Words meanings summery:

• तथा (tathā) - similarly (so, thus, in that manner, similarly)

• च (ca) - and (and, also)

• संभ्रमस्वप्नमिथ्याज्ञानादिभासुराः (saṁbhramasvapnamithyājñānādibhāsurāḥ) - appearing brilliant, akin to confusion, dreams, and false knowledge (shining forth due to confusion, dreams, false knowledge, etc.)

• गन्धर्वनगराकाराः (gandharvanagarākārāḥ) - taking the form of mirage-cities (gandharva-nagara) (having the form of a Gandharva city (mirage city))

• दृष्टाः (dṛṣṭāḥ) - are observed (seen, perceived, observed)

• मनसि (manasi) - within the mind (manas) (in the mind, in thought)

• शक्तयः (śaktayaḥ) - (cosmic) powers (śakti) (powers, faculties, energies, capabilities)

Words meanings and morphology

तथा (tathā) - similarly (so, thus, in that manner, similarly)

(indeclinable)

Correlative adverb

च (ca) - and (and, also)

(indeclinable)

Conjunction

संभ्रमस्वप्नमिथ्याज्ञानादिभासुराः (saṁbhramasvapnamithyājñānādibhāsurāḥ) - appearing brilliant, akin to confusion, dreams, and false knowledge (shining forth due to confusion, dreams, false knowledge, etc.)

(adjective)

Nominative, feminine, plural of saṃbhramasvapnamithyājñānādibhāsura

saṁbhramasvapnamithyājñānādibhāsura - shining with/like confusion, dreams, false knowledge, etc.

A long Bahuvrihi compound.

Compound type : bahuvrīhi (saṃbhrama+svapna+mithyājñāna+ādi+bhāsura)

• saṃbhrama – confusion, delusion, agitation
  noun (masculine)
  Derived from root bhram with prefix sam-
  Prefix: sam
  Root: bhram (class 1)
• svapna – dream, sleep
  noun (masculine)
  Root: svap (class 2)
• mithyājñāna – false knowledge, illusion, error
  noun (neuter)
  Compound of mithyā (false) and jñāna (knowledge).
• ādi – beginning, etcetera, and so on
  indeclinable
  Suffix indicating 'and so forth'.
• bhāsura – shining, radiant, brilliant, splendid
  adjective (masculine)
  Derived from root bhās (to shine).
  Root: bhās (class 1)

Note: Qualifies `śaktayaḥ`.

गन्धर्वनगराकाराः (gandharvanagarākārāḥ) - taking the form of mirage-cities (gandharva-nagara) (having the form of a Gandharva city (mirage city))

(adjective)

Nominative, feminine, plural of gandharvanagarākāra

gandharvanagarākāra - having the form or appearance of a city of Gandharvas

Bahuvrihi compound. Gandharva-nagara is a compound itself.

Compound type : bahuvrīhi (gandharvanagara+ākāra)

• gandharvanagara – city of Gandharvas, mirage city
  noun (neuter)
  Compound of Gandharva (celestial musician) and nagara (city).
• ākāra – form, shape, appearance
  noun (masculine)
  Derived from root kṛ with prefix ā-.
  Prefix: ā
  Root: kṛ

Note: Qualifies `śaktayaḥ`.

दृष्टाः (dṛṣṭāḥ) - are observed (seen, perceived, observed)

(adjective)

Nominative, feminine, plural of dṛṣṭa

dṛṣṭa - seen, perceived, observed, visible

Past Passive Participle

Past passive participle of root `dṛś` (to see).

Root: dṛś (class 1)

Note: Acts as the main verb (are seen) in absence of a finite verb.

मनसि (manasi) - within the mind (manas) (in the mind, in thought)

(noun)

Locative, neuter, singular of manas

manas - mind, intellect, thought, consciousness

Root `man` (to think).

Root: man

Note: Indicates location.

शक्तयः (śaktayaḥ) - (cosmic) powers (śakti) (powers, faculties, energies, capabilities)

(noun)

Nominative, feminine, plural of śakti

śakti - power, energy, faculty, capability, divine power (śakti), female deity

Derived from root `śak` (to be able).

Root: śak (class 5)

Note: Subject of the sentence.