-கிறு-

• -க்கிறு- (-kkiṟu-) — geminated (see usage notes)
• -கின்று- (-kiṉṟu-) — formal

Clipping / syncopic form of -கின்று- (-kiṉṟu-), from the adverbial participle and past forms of கில் (kil, “to be possible”), an obsolete verb.

• IPA^(key): /kɪrʊ/, [kɪrɯ]

-கிறு- • (-kiṟu-)

1. present tense marker for verbs.

   ‎வரு (varu) + ‎-கிறு- (-kiṟu-) + ‎-அது (-atu) → ‎வருகிறது (varukiṟatu, “It is coming”)

   ‎பண்ணு (paṇṇu) + ‎-கிறு- (-kiṟu-) + ‎-ஆன் (-āṉ) → ‎பண்ணுகிறான் (paṇṇukiṟāṉ, “He is doing”)

• Verbs of class 6 and class 7 (see template ta-conj-auto) geminate this marker into -க்கிறு- (-kkiṟu-) instead.
  • ‎சாதி (cāti) + ‎-க்கிறு- (-kkiṟu-) + ‎-ஆன் (-āṉ) → ‎சாதிக்கிறான் (cātikkiṟāṉ, “He achieves”)
  • ‎மற (maṟa) + ‎-க்கிறு- (-kkiṟu-) + ‎-ஆள் (-āḷ) → ‎மறக்கிறாள் (maṟakkiṟāḷ, “She forgets”)
• In Spoken Tamil, this marker is often shortened or outright dropped when not in germinated form. For example,
  • வருகிறது (varukiṟatu) → “வருது (varutu)” (by surface analysis, வரு (varu) +‎ -து (-tu))
  • பண்ணுகிறான் (paṇṇukiṟāṉ) → “பண்ணுறான் (paṇṇuṟāṉ)” (by surface analysis, பண்ணு (paṇṇu) +‎ -று- (-ṟu-) +‎ -ஆன் (-āṉ))

This varies depending on dialect, with some dialects shortening the marker more than others.

• University of Madras (1924–1936), “கிறு”, in Tamil Lexicon, Madras [Chennai]: Diocesan Press
• Johann Philipp Fabricius (1779), “கிறு”, in A Malabar and English Dictionary, Tranquebar: Evangelical Lutheran Mission Pub. House; republished as Tamil and English Dictionary, 1972
• Miron Winslow (1862), “கிறு”, in A comprehensive Tamil and English dictionary of high and low Tamil, Madras: P. R. Hunt
• N. Kathiraiver Pillai (1889), “கிறு”, in தமிழ் மொழி அகராதி [Tamil language dictionary] (in Tamil), Chennai: Pi. Ve. Namacivaya Mutaliyar, published 1928