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Definition 2024

See also: th, Th, TH, 'th, th', .th, th-, and Appendix:Variations of "th"

-th

(rare) Forming nouns from verbs of action.
berth, blowth, drawth, flowth, growth, health, sight, spilth, stealth, theft, weight
(rare) Forming nouns from adjectives.
breadth, coolth, dearth, depth, filth, height/heighth, length, roomth, strength, troth, truth, sloth/slowth, warmth, wealth, width, wrath, wrength youth/youngth

Representing Old English -þa, -þe, -oþa, -oþe, derived from a Proto-Indo-European superlative suffix.

-th

Used to form the ordinal numeral when the final term of the spelled number is not “first”, “second”, or “third”.
the 4th/Fourth of July

used to form the ordinal numeral

Armenian: -րդ (hy) ‎(-rd), -երորդ ‎(-erord)
Breton: -vet (br)
Catalan: -è, -èsim
Chinese:
Mandarin: 第... (zh) ‎(dì...)
Finnish: -s (fi)
French: -ième (fr)
German: (indefinite) -ter m, (or any gender after a definite article) -te f, (indefinite) -tes n
Hebrew: ־י ‎(-i)
Hindi: -वां ‎(-vā̃)
Indonesian: ke-
Italian: -esimo (it), -to (4, 5, 6), -imo (7, 10)
Japanese: 第... (ja) ‎(だい..., dai...), ...目 (ja) ‎(...め, ...me)
Khmer: ទី- (km) ‎(tii-)
Korean: -째 (ko) ‎(-jjae)
Lao: ທີ່- ‎(thī-)

Malay:

Rumi: ke-

Jawi: ک-
Marathi: -वा ‎(-vā)
Persian: ـم (fa) ‎(-om)
Polish: -y (pl) m, -ty m
Portuguese: -eiro (pt) (1, 3, 11, 13, 21, 23, 31, 33, …), -to (4, 5, 6, 14, 15, 16, …), -avo (8, 18, 28, …), -imo (7, 10, 11, 20, 30, 40, …)
Russian: (various endings exist) -ый (ru) ‎(-yj), -о́й (ru) m ‎(-ój), -ий (ru) m ‎(-ij)
Spanish: -ero (es) (1, 3, 11, 13, 21, 23, 31, 33, ...), -to (es) (4, 5, 6, 14, 15, 16, 24, 25, 26, ...), -avo (es) (8, 18, 28, ...), -imo (7, 10, 11, 12), -ésimo (20, 30, 40, 50, ... 100, ...)
Swedish: -te (sv), -de (sv)
Tajik: -ум ‎(-um)
Thai: ที่- (th) ‎(têe-)
Turkish: -inci, -nci (tr), -ıncı, -ncı (tr), -üncü, -uncu
Vietnamese: thứ ... (vi)
Welsh: -fed, -ed, -ydd (cy), -edd

Representing Old English -eþ, -aþ, -þ.

-th

(archaic) A variant of -eth, used to form the archaic third-person singular indicative present tense of verbs.

come → cometh

have → hath

From Middle English -th, -t, from Old English -þ, -t, -þu, -tu, -þo, -to ‎(“-th”, abstract nominal suffix), from Proto-Germanic *-iþō ‎(“-th”), from Proto-Indo-European *-iteh₂ ‎(“-th”). Cognate with Scots -th ‎(“-th”), West Frisian -te ‎(“-th”), Dutch -te ‎(“-th”), Danish -de ‎(“-th”), Swedish -d ‎(“-th”), Icelandic -ð, -d ‎(“-th”), Gothic -𐌹𐌸𐌰 ‎(-iþa, “-th”), Latin -itās ‎(“-ty, -ity”). See -ity.