What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

When vs Undefined - What's the difference?

when | undefined |

As an adverb when

is (interrogative) (used to introduce questions about time).

As a conjunction when

is at what time.

As a pronoun when

is (interrogative) what time; which time.

As a noun when

is the time.

As an interjection when

is that's enough,.

As an adjective undefined is

lacking a definition or value.

when

English

(wikipedia when)

Adverb

(-)
  • (interrogative) (Used to introduce questions about time).
  • When will they arrive ?
  • (Used to introduce indirect questions about time).
  • Do you know when they arrived?
    Do you know when they will arrive?
    Do you know when they arrive?
  • At an earlier and less prosperous time.
  • He's mister high and mighty now, but I remember him when .

    Conjunction

    (missing senses) (English Conjunctions)
  • At what time.
  • :
  • *
  • , title=(The Celebrity), chapter=4 , passage=The Celebrity, by arts unknown, induced Mrs. Judge Short and two other ladies to call at Mohair on an afternoon when Mr. Cooke was trying a trotter on the track.
  • *
  • *:Turning back, then, toward the basement staircase, she began to grope her way through blinding darkness, but had taken only a few uncertain steps when , of a sudden, she stopped short and for a little stood like a stricken thing, quite motionless save that she quaked to her very marrow in the grasp of a great and enervating fear.
  • At such time as.
  • :
  • *{{quote-magazine, year=2013, month=July-August, author=(Henry Petroski)
  • , title= Geothermal Energy , volume=101, issue=4, magazine=(American Scientist) , passage=Energy has seldom been found where we need it when we want it. Ancient nomads, wishing to ward off the evening chill and enjoy a meal around a campfire, had to collect wood and then spend time and effort coaxing the heat of friction out from between sticks to kindle a flame. With more settled people, animals were harnessed to capstans or caged in treadmills to turn grist into meal.}}
  • As soon as.
  • :
  • At a time in the past.
  • :
  • *{{quote-news, year=2012, date=April 22, author=Sam Sheringham, work=BBC Sport
  • , title= Liverpool 0-1 West Brom , passage=The Baggies had offered little threat until the 28th minute, but when their first chance came it was a clear one.}}

    Derived terms

    * whenwe

    Pronoun

    (English Pronouns)
  • (interrogative) What time; which time
  • Since when do I need your permission?

    Noun

    (en noun)
  • The time.
  • A good article will cover the who, the what, the when , the where, the why and the how .

    See also

    * since when

    Interjection

    (en interjection)
  • That's enough,
  • *
  • *
  • *
  • Derived terms

    * whenever

    Statistics

    *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
  • The result of division by zero is undefined .

    Antonyms

    * defined