The six-letter word that means to want to have or do something is "desire." It conveys a strong feeling of wanting or wishing for something, whether it's a tangible object or an experience.
A six letter word to command not to do something is to forbid.
thorntail
bridge
a six letter word
shirts
Emboss
rhythm
laxity
Exhort
Patter
Likely candidate is the word: Inform.
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