This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. To acknowledge negatively; to send a NAK signal to.

"I simply didn't hear that last part, nor did I see the "nack" following "Sara" in their emails."

hindermost    backmost    rear    rearward    rearmost    hindmost    posterior    noncurrent    jack back    to lie on one's back   

front    veer   

backed    backing    backs   

cloth covering    body part    position    place    changeover    switch    shift    finance    support    back up   

buttocks    reverse    behind one's back    small of the back    back cylinder-head    to back water    paneled back    to back a warrant    the back of beyond    to back up   

bac   

distant    remote    overdue    mount    indorse    support    maintain    ago    posterior    backside   

Adak    Black    Braque    Chirac    Jack    Jacques    Lak    Mac    Mack    Macke   

down    several    upper    narrow    third    rear    wooden    try    end    crescentic