• placks,
• fleaks,
• flacor,
• facks,
• fackes,
• florks,
• wlaks,
• flecs,
• flacky,
• flages,
• flahes,
• flickr,
• flciks,
• flahs,
• flace,
• flacors,
• filcks,
• fliks,
• flawes,
• flaks

• flock,
• flash,
• fleck,
• flick,
• floss,
• Flook,
• floc,
• flach,
• fliss,
• flocks,
• slacks,
• fleek,
• flicks,
• flanks,
• flask,
• flak,
• flack,
• flies,
• flakes,
• flesh,
• Flecha,
• flush.

The adjective form of the word "flacks" is "flackish".