The word nphard is not a valid scrabble word

2 short excerpts of WikWik.org (WikWik is an online database of words defined in the English, French, Spanish, Italian, and other Wiktionnaries.)

  • NP-hard adj. (Computing theory) A problem H is NP-hard if and only if there is an NP-complete problem L that is polynomial…
  • NP-hard adj. (Computing theory) An alternative definition restricts NP-hard to decision problems and then uses polynomial-time…

22 valid words from 2 definitions

ALTERNATIVE AN AND COMPLETE COMPUTING DECISION DEFINITION HARD IF IS ONLY POLYNOMIAL PROBLEM PROBLEMS RESTRICTS THAT THEN THEORY THERE TIME TO USES

1 invalid word from 2 definitions

NP

4 words-in-word (Words found as is inside the word.)

AR ARD HA HARD

2 words-in-word RTL (Words found written from right to left, inside the word.)

AH RAH

2 anagrams plus one (New words formed with all the letters from the word plus a letter.)

+A HARDPAN PRADHAN

Scrabble scoring

  • Zero, invalid.
  • 12 points, without game rules.

Other languages

Categories without words

  • No anagrams (Word found by changing the order of the letters.)
  • No cousins (Word found by changing only one letter.)
  • No lipograms (Word found when removing only one letter.)
  • No epentheses (Word found when adding only one letter.)
  • No suffixes (Word found by adding one or more letters at the end of the word.)
  • Not found in the middle (Word found by adding letters in front and at the end of the word.)
  • No prefixes (Word found by adding one or more letters in front of the word.)
  • No anagrams can be formed by removing a letter (New word formed with all the letters of the word minus a letter.)

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.

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