okka > ḗka in other Indo-European Languages (53)
Turner’s A Comparative Dictionary of the Indo-Aryan Languages says Sanskrit word ḗka means “one.” He also presents the cognates of ḗka in other Indo-European languages:
Pali ēka-, ēkaka-; Aśokan i.e. the language of the Inscriptions of Aśoka, Shāhbāzgaṛhī, Mānsehrā, Girnār and Jaugaḍa Rock Inscription of Aśoka eka-; Sārnāth Inscription of Aśoka ika-; Language of ‘Kharoṣṭhī Inscriptions discovered by Sir Aurel Stein in Chinese Turkestan' eka, ega; Prakrit ēga-; Ashkun a, ač; Kati ew; Waigalī ew, εw; Prasun ipǖ́n; Pashai ẹ̄; Khowār i; Tōrwālī ē; Nepāli yeuṭā; Assamese eṭā; Oṛiyā e.
All these cognates and the following words related to ḗka originate from Tamil okka.
ēkaká, “solitary.” ḗkacatvāriṁśat, “41.” ēkacara, “wandering alone, solitary.” ēkacchattra, “ruled by one king only.” ēkatará, “one of two, other.” ēkatra, “in one, in one place.” ḗkatriṁśat, “31.” ēkatva, “oneness, unity.” ēkanavati, “91.” ēkapañcāśat, “51.” ēkaputraka, “having one son.” ēkabhakta, “eating only one meal a day.” ēkavarṇa, “of one colour.” ḗkaviṁśati, “21.” *ēkavr̥tta-, “simple.” ēkaṣaṣṭi, “61.” ḗkasaptati, “71.” ēkasthá, “standing together.” ḗkahāyana, “one-year-old.” *ēkāṁsa, “on one shoulder.” ēkāṅga, “single body.” *ēkāṇḍin, “having one testicle only (of a horse).” ḗkādaśa¹, “eleven.” ēkādaśá², “eleventh.” ēkānta, “lonely spot.” ēkāntara, “separated by one.” ēkārtha, “having the same purpose.” *ēkāśana, “having one meal.” ēkāśīti, “81.” *ēkāhika, “having interval of one day.” ḗkōttara, “increasing by one.” ēkōna, “less by one.” *ēkkala, “alone.” *ēkkalaputra, “only son.” ekōnacatvāriṁśat, “39.” ēkōnatriṁśat, “29.” ēkōnanavati, “89.” ēkōnapañcāśat, “49.” ēkōnaviṁśati, “19.” ēkōnaṣaṣṭi, “59.” ēkōnasaptati, “69.” ēkōnāśīti, “79.” *ēkka-, “one.” *ēkkaculla, “stove with one opening.” *ēkkadhārā, “a single edge or fold.” *ēkkapārśva, “on one side.” *ēkkavandhyā, “barren except for one.” *ēkkavartin, “living alone.” *ēkkasara, “having onefold.” aikya, “oneness.” ánēka, “many.” naika, “many.”