Waffling - deformation of a sheet caused by excessive ink tack.

Watermark - a design put into the fabric of the paper during manufacture by either a recessed or raised design on the dandy roll.

Water Leaf - moisture-absorbent paper such as blotting or filter paper.

Wet Strength - papers to which this term applies retain an appreciable percentage of their mechanical strength after soaking in water, and are made by the addition of a resin to the stock during paper manufacture. Resin cements the fibres together and the bond tends to improve with age.

With the Grain - Parallel to the grain direction of the fibres of the paper or board, as opposed to against the grain.

White Lined Board - a multi ply construction made predominantly from selected waste paper.

Woodfree or Fine Paper - papers and boards containing no fibres other than those derived from chemical wood pulping processes i.e. contains no lignin.

Woodpulp - wood reduced to a pulp for subsequent papermaking processes; can be either mechanical, chemical or combination;
TMP and CTMP.