महाभारतः mahābhārataḥ - book-3, chapter-159, verse-7

अकालज्ञः सुदुर्मेधाः कार्याणामविशेषवित् ।
वृथाचारसमारम्भः प्रेत्य चेह च नश्यति ॥७॥

7. akālajñaḥ sudurmedhāḥ kāryāṇāmaviśeṣavit ,
vṛthācārasamārambhaḥ pretya ceha ca naśyati.

7. akālajñaḥ sudurmedhāḥ kāryāṇām aviśeṣavit
vṛthācārasamārambhaḥ pretya ca iha ca naśyati

7. One who does not know the proper time, is extremely dull-witted, lacks discrimination regarding actions, and whose undertakings are futile, perishes both in this world and after death.

Words meanings summery:

• अकालज्ञः (akālajñaḥ) - one who does not know the proper time, unaware of the right time

• सुदुर्मेधाः (sudurmedhāḥ) - very dull-witted, extremely foolish, very ignorant

• कार्याणाम् (kāryāṇām) - of actions, of tasks, of duties

• अविशेषवित् (aviśeṣavit) - not knowing distinctions, indiscriminating

• वृथाचारसमारम्भः (vṛthācārasamārambhaḥ) - one whose undertakings or actions are futile, one whose efforts are in vain

• प्रेत्य (pretya) - after death, having died, in the next world

• च (ca) - and, also

• इह (iha) - here, in this world, now

• च (ca) - and, also

• नश्यति (naśyati) - perishes, is destroyed, disappears

Words meanings and morphology

अकालज्ञः (akālajñaḥ) - one who does not know the proper time, unaware of the right time

(adjective)

Nominative, masculine, singular of akālajña

akālajña - ignorant of time, one who does not know the proper season or occasion

Compound type : na-tatpurusha (a+kālajña)

• a – not, non-, un-
  indeclinable
  negating prefix
• kālajña – one who knows the time, knowing the proper time
  adjective (masculine)

सुदुर्मेधाः (sudurmedhāḥ) - very dull-witted, extremely foolish, very ignorant

(adjective)

Nominative, masculine, singular of sudurmedhas

sudurmedhas - very dull-witted, extremely foolish

Compound type : bahuvrihi (su+dur+medhas)

• su – good, well, very, excellent
  indeclinable
  prefix intensifying the meaning
• dur – bad, ill, difficult, hard
  indeclinable
  prefix indicating difficulty or badness
• medhas – intellect, understanding, wisdom
  noun (neuter)

कार्याणाम् (kāryāṇām) - of actions, of tasks, of duties

(noun)

Genitive, neuter, plural of kārya

kārya - to be done, proper to be done, duty, action, task

Gerundive

derived from root kṛ with suffix -ya

Root: kṛ (class 8)

अविशेषवित् (aviśeṣavit) - not knowing distinctions, indiscriminating

(adjective)

Nominative, masculine, singular of aviśeṣavid

aviśeṣavid - one who does not know distinctions, indiscriminating, ignorant of specific differences

Compound type : na-tatpurusha (a+viśeṣavit)

• a – not, non-, un-
  indeclinable
  negating prefix
• viśeṣavid – one who knows distinctions, discriminating
  adjective (masculine)

वृथाचारसमारम्भः (vṛthācārasamārambhaḥ) - one whose undertakings or actions are futile, one whose efforts are in vain

(adjective)

Nominative, masculine, singular of vṛthācārasamārambha

vṛthācārasamārambha - one whose undertakings are in vain

Compound type : bahuvrihi (vṛthā+ācāra+samārambha)

• vṛthā – in vain, uselessly, fruitlessly
  indeclinable
• ācāra – conduct, custom, practice, action
  noun (masculine)
  Prefix: ā
• samārambha – commencement, undertaking, effort
  noun (masculine)
  Prefixes: sam+ā
  Root: rabh (class 1)

प्रेत्य (pretya) - after death, having died, in the next world

(indeclinable)

Absolutive

derived from root i with prefix pra, and suffix -ya

Prefix: pra

Root: i (class 2)

च (ca) - and, also

(indeclinable)

इह (iha) - here, in this world, now

(indeclinable)

च (ca) - and, also

(indeclinable)

नश्यति (naśyati) - perishes, is destroyed, disappears

(verb)

3rd person , singular, active, present indicative (laṭ) of naś

Root: naś (class 4)