महाभारतः mahābhārataḥ - book-13, chapter-148, verse-21

न नग्नामीक्षते नारीं न विद्वान्पुरुषानपि ।
मैथुनं सततं गुप्तमाहारं च समाचरेत् ॥२१॥

21. na nagnāmīkṣate nārīṁ na vidvānpuruṣānapi ,
maithunaṁ satataṁ guptamāhāraṁ ca samācaret.

21. na nagnām īkṣate nārīm na vidvān puruṣān api
maithunam satatam guptam āhāram ca samācaret

21. vidvān nagnām nārīm na īkṣate puruṣān api na
maithunam ca āhāram satatam guptam samācaret

21. A wise person should not gaze upon a naked woman, nor even upon naked men. Sexual activity and the consumption of food should always be performed discreetly.

Words meanings summery:

• न (na) - not, no

• नग्नाम् (nagnām) - naked, nude

• ईक्षते (īkṣate) - one should gaze upon (one sees, one looks at)

• नारीम् (nārīm) - woman, female

• न (na) - not, no

• विद्वान् (vidvān) - learned, knowing, wise person

• पुरुषान् (puruṣān) - men, males

• अपि (api) - even (also, even, too)

• मैथुनम् (maithunam) - sexual activity (sexual intercourse, copulation)

• सततम् (satatam) - always (always, continuously, constantly)

• गुप्तम् (guptam) - discreetly, privately (hidden, secret, protected)

• आहारम् (āhāram) - the consumption of food (food, meal, eating)

• च (ca) - and (and, also)

• समाचरेत् (samācaret) - should be performed (one should perform, practice, behave)

Words meanings and morphology

न (na) - not, no

(indeclinable)

नग्नाम् (nagnām) - naked, nude

(adjective)

Accusative, feminine, singular of nagna

nagna - naked, nude, unclothed

Note: Feminine accusative singular of nagna

ईक्षते (īkṣate) - one should gaze upon (one sees, one looks at)

(verb)

3rd person , singular, middle, present (laṭ) of īkṣ

Root: īkṣ (class 1)

Note: Present 3rd singular middle voice (ātmanepada)

नारीम् (nārīm) - woman, female

(noun)

Accusative, feminine, singular of nārī

nārī - woman, wife, female

न (na) - not, no

(indeclinable)

विद्वान् (vidvān) - learned, knowing, wise person

(adjective)

Nominative, masculine, singular of vidvat

vidvat - learned, knowing, wise, intelligent

Present Active Participle

From root vid (to know)

Root: vid (class 2)

Note: Nominative singular masculine of vidvat (present active participle of vid)

पुरुषान् (puruṣān) - men, males

(noun)

Accusative, masculine, plural of puruṣa

puruṣa - man, male, person, spirit (puruṣa)

अपि (api) - even (also, even, too)

(indeclinable)

मैथुनम् (maithunam) - sexual activity (sexual intercourse, copulation)

(noun)

Accusative, neuter, singular of maithuna

maithuna - copulation, sexual intercourse, pairing, union

Derived from mithuna (a pair)

सततम् (satatam) - always (always, continuously, constantly)

(indeclinable)

Note: Adverbial usage (accusative neuter singular form acting as adverb)

गुप्तम् (guptam) - discreetly, privately (hidden, secret, protected)

(adjective)

Accusative, neuter, singular of gupta

gupta - hidden, concealed, secret, protected, private

Past Passive Participle

From root gup (to protect, to hide)

Root: gup (class 1)

Note: Neuter accusative singular, qualifying maithunam and āhāram. Also functions adverbially.

आहारम् (āhāram) - the consumption of food (food, meal, eating)

(noun)

Accusative, masculine, singular of āhāra

āhāra - food, meal, eating, taking, drawing near

From ā- + hṛ (to take)

Prefix: ā

Root: hṛ (class 1)

च (ca) - and (and, also)

(indeclinable)

समाचरेत् (samācaret) - should be performed (one should perform, practice, behave)

(verb)

3rd person , singular, active, optative (vidhiliṅ) of samācar

From sam-ā- + car (to move, to act)

Prefixes: sam+ā

Root: car (class 1)

Note: 3rd singular optative active voice