-th

suffix — 6 senses

-th

suffix

/-θ/

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

1

Idiomatic, Morpheme Used to form nouns from verbs of action.

  • grow + -th → growth
  • heal + -th → health
2 more examples
  • steal + -th → stealth
  • bear + -th → birth
2

Morpheme Used to form nouns of quality from adjectives.

No longer productive except in informal coinages

  • warm + -th → warmth
  • long + -th → length
3 more examples
  • wide + -th → width
  • deep + -th → depth
  • strong + -th → strength
Synonyms
-ing, -ation, -ness, -ity, -cy, -itude

-th

suffix

Etymology From Middle English -the, -th, -te, -t (ordinal suffix), from Old English -þa, -þe, -oþa, -oþe, derived from a Proto-Indo-European superlative suffix.

1

Morpheme 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
  • Washington’s first outpost of the California-born burger joint opened Wednesday after long anticipation and a few fake-outs (like the prank sign someone posted in Wallingford in June). Problem is, it’s located in Ridgefield, a suburb of Vancouver, Washington. […] Ridgefield is the 424th location.2025 August 21, Allison Williams, “I Braved Washington’s First In-N-Out Burger Line”, in Seattle Met, archived from the original on 28 Aug 2025:
2

Mathematics, Sciences Morpheme Used to form a term denoting the ordinal numeral corresponding to the value, being a natural number, of a mathematical expression.

  • The nth term of a geometrical progression whose first term is a and common ratio is r is given by ar#123;n-1#125;.
3

Morpheme Used to form the denominator of a fraction.

  • one seventh; three tenths
Coordinate terms
-nd, -rd, -st

-th

suffix

Etymology From Middle English -eth, -th, from Old English -eþ, -aþ, -þ.

1

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

  • come → cometh
  • have → hath
2 more examples
  • do → doth
  • say → saith

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.