Standard Lemma guide

dateless

adj · 11 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈdeɪtlɪs/
  • Australia: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Out of one's head; deranged.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Thick-headed.

Definition source: English Wiktionary via Wiktextract

Usage: UK, dialectal, slang

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: addlebrained, addlepated, airheaded, bee-brained, beef-witted, beefheaded, beetle-headed, birdbrained, blockheaded, Boeotian, boneheaded, boofheaded, braindead, brainless, bubbleheaded, buffle-headed, bullet-headed, cerebrally challenged, childish, chowderheaded, chuckleheaded, crackbrained, cretinous, daft, dense, dented, dim-bulb, dim-headed, dim-witted, dim, doltish, dopey, dozy, drowsy, dull-headed, dull-minded, dull-witted, dull, dumber than a box of rocks, dumb, dunderheaded, empty-headed, fatheaded, feeble-minded, flea-brained, foolish, fuzzy-headed, fuzzy-minded, goofy, half-brained, half-witted, hammer-headed, idiotic, ignorant, imbecilic, inane, insipid, intellectually challenged, knuckleheaded, lamebrained, lowbrow, lumpish, lunkheaded, mentally challenged, mentally retarded, mindless, monosynaptic, moronic, muttonheaded, nitwitted, numbskulled, oafish, obtuse, peabrained, pratty, pudding-headed, puerile, purblind, quarter-witted, retarded, ridiculous, rockheaded, sharp as a bowling ball, sheep-headed, silly, simple, slow, slow on the uptake, slow-witted, smooth-brained, stolid, stupid, thick-skulled, thickheaded, thickwitted, thick, unapprehensive, unclever, uninformed, unintelligent, unsmart, vacant, vacuous, witless, wooden-headed, wool-headed, woolly-headed, woolly-minded, dumb as a bag of hammers, dumb as a box of rocks, dumb as a doorknob, dumb as an ox, dumb as a post, dumb as a sack of hammers, dumb as dirt, dumber than a rock, not the sharpest crayon in the box, not the sharpest knife in the drawer, not the sharpest tool in the shed, thick as a brick, thick as a plank, thick as champ, thick as mince, thick as two short planks, thick as a whale omelette, ass-brained, fuckwitted, shit-for-brains, thick as pig shit

Antonyms: none provided

3

adj

Meaning 3

Without a date imprinted, assigned, or associated.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Having no date—a meeting with a lover or potential lover.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Examples

  • It is hard to believe that she could be dateless on a Saturday night.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

adj

Meaning 5

Timeless; immortal

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

adj

Meaning 6

Without a start; immemorial

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

adj

Meaning 7

Without an end; endless

Definition source: English Wiktionary via Wiktextract

Usage: archaic, not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

adjective satellite

Meaning 8

unaffected by time

Definition source: Princeton WordNet 3.0

Examples

  • few characters are so dateless as Hamlet
  • Helen's timeless beauty

Meaning relationships

Synonyms: timeless

Antonyms: none provided

9

adjective satellite

Meaning 9

not bearing a date

Definition source: Princeton WordNet 3.0

Examples

  • a dateless letter

Meaning relationships

Synonyms: undated

Antonyms: none provided

10

adjective satellite

Meaning 10

of such great duration as to preclude the possibility of being assigned a date

Definition source: Princeton WordNet 3.0

Examples

  • dateless customs

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

adjective satellite

Meaning 11

having no known beginning and presumably no end

Definition source: Princeton WordNet 3.0

Examples

  • the dateless rise and fall of the tides
  • time is endless
  • sempiternal truth

Meaning relationships

Synonyms: endless, sempiternal

Antonyms: none provided

History

Etymology

Unknown. Perhaps derived from Old English þeatless (“thoughtless, without plan”). See also deedless.

Coined between 1585 and 1595 from date + -less

Real reading context

dateless in complete knowledge articles