Writing instrument

An applicator in which a tip is equipped with a porous member as an applying part and a holding member holding the above porous member and having at least one liquid guiding part for feeding a liquid to the applying part, which comprises a relay porous member for feeding a liquid contained in an applicator main body to the liquid guiding part provided in a central part of a longitudinal direction of the holding member and in which the holding member is a visible part enabling to visually recognize an applying direction, wherein an area ratio of the above visible part on a front face is 40% or more of the tip protruding from a tip part of the applicator main body, and an area ratio of the visible part on a side face of the holding member in the tip is 40% or more, the liquid guiding part is less than a holding member side cross-sectional area of the applying part or less than a holding member side cross-sectional area of the relay porous member, and a clap part is formed between a step part and the relay porous member with a clearance in the range of 0-2 mm.