• Onder de pet houden
  • Literal Translation: "To keep under the hat."
  • Meaning: "To cover up something that cannot see the light of day."

• Om de haverklap
  • Literal Translation: "Every flail on the oats."
  • Meaning: "Very often."

• Oost west, thuis best.
  • Literal Translation: "East West, home best."
  • Meaning: No matter where you travel, it's always great to come home.
  • English Equivalent: "Home sweet home."

• Op alle slakken zout leggen.
  • Literal Translation: "Putting salt on every snail."
  • Meaning: "Looking for all of the smallest errors to comment on."

• Op de neus kijken.
  • Literal Translation: "Looking down at one's nose."
  • Meaning: "Being disappointed."

• Op elk potje past een dekseltje.
  • Literal Translation: "Every little pot has a fitting lid."
  • Meaning: "There's a solution for every situation. [or] There's a fitting partner for any person."

• Op zwart zaad zitten.
  • Literal Translation: "Sitting on black seed."
  • Meaning: "Having no money at all."

• Oude wijn in nieuwe zakken.
  • Literal Translation: "Old wine in new bags."
  • Meaning: Nothing really new, but put in different terms.
  • English Equivalent: "The same shit with other flies on it; same meat, different gravy."

• Over lijken gaan.
  • Literal Translation: "Going over corpses."
  • Meaning: "Going for your own target however crude the method."

• Potje breken, potje betalen.
  • Literal Translation: "Break a pot, pay for a pot."
  • Meaning: You have to pay for the damage you caused.
  • English Equivalents: "Paying the piper for playing the tune." "You break it, you buy it."
• Parels voor de zwijnen.
  • Literal Translation: "Pearls for the pigs."
  • Meaning: Too much effort for those who won't or are not capable to appreciate it.

• Roeien met de riemen die je hebt.
  • Literal Translation: "Rowing with the oars you have got."
  • Meaning: "Making do with the means available to you."

• Spreken is zilver, zwijgen is goud.
  • Literal Translation: "Speaking is silver, being silent is gold."
  • Meaning: It's better to keep your silence, then to speak (for example in diplomacy or politics).
  • English Equivalent: "Silence is golden."

• Spijkers op laag water zoeken.
  • Literal translation: "Looking for nails at low tide."
  • Meaning: Being pedantic about small details.
  • English Equivalent: "Nitpicking."

• Stel niet uit tot morgen, wat gij heden kunt bezorgen.
  • Literal Translation: "Don't postpone until tomorrow, what you can take care of now."
  • Meaning: Don't procrastinate.

• Stevig in het zadel zitten.
  • Literal translation: "Sitting securely in the saddle."
  • Meaning: "Having a solid high position; not easy to overthrow."

• Storm in een glas water.
  • Literal Translation: "storm in a glass of water."
  • Meaning: "Making a fuss about nothing important."
  • English equivalent: "Tempest in a tea pot"
  • Source: http://en.wikiquote.org/