Webster's English Dictionary

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require

Cross references:
  1. demand                 2. lack                  
 
re.quire \ri-'kwi-(*)r\ vb [ME requeren, fr. MF requerre, fr. (assumed) VL 
   requaerere to] seek for, need, require, alter. of L requirere, fr. re- + 
   quaerere to seek, ask 1a: to claim by right and authority : DEMAND  archaic 
    1b: REQUEST  2a: to call for as suitable or appropriate  2b: to demand as 
   necessary or essential : NEED, WANT  3: to impose a compulsion or command 
   on : COMPEL  4: to feel or be constrained - used with a following 
   infinitive  archaic  : ASK