Uniform line

A line of consistent thickness from start to finish. Mechanical, precise, and structural — the default of digital tools and technical drawing.

Tapered line

Starts or ends at a fine point, swelling to full weight at the centre. Implies speed, direction, and organic gesture — essential in brush lettering and illustration.

Calligraphic line

Weight shifts dramatically with stroke direction — thick on the downstroke, thin on the upstroke. Mimics the nib or brush angle of traditional calligraphy.

Dashed line

Interrupted rhythm of marks and gaps. Signals boundaries, guidelines, or routes without the finality of a solid line. A language unto itself in technical drawing.

Dotted line

A sequence of evenly spaced points rather than dashes. Carries a lighter, more tentative quality — used for fold lines, stitch patterns, and soft boundaries.

Broken line

Irregular, unpredictable interruptions in an otherwise continuous stroke. Conveys fragility, disruption, or incompleteness — frequently used in expressive and editorial illustration.

Gestural line

Fast, spontaneous marks that capture movement rather than outline. Energy and direction matter more than accuracy — the signature of life drawing and rapid sketching.

Contour line

Traces the outer edge of a form without shading. A pure outline that describes shape through boundary alone — the foundation of figure drawing and scientific illustration.

Cross-hatch line

Intersecting sets of parallel lines that build tone and texture through layering. A classic engraving and pen-and-ink technique — density determines shadow depth.

Wavering line

An undulating, sinuous path that breathes with natural rhythm. Found in topographic maps, water illustration, and hand-drawn organic forms — never perfectly mathematical.

Thick-to-thin line

Weight modulation along the stroke’s path, transitioning from heavy to delicate. The hallmark of traditional brush and nib work — reveals the direction and pressure of the hand.

Implied / ghost line

A line that exists in perception but not in full mark — gaps are mentally completed by the viewer. Used in modernist design to suggest edges without committing to them.

Construction line

Light guide lines drawn first and often left visible as a trace of process. In architecture and technical drawing they map the skeleton before any finished line is committed.

Scratchy / sketchy line

Multiple overlapping passes along the same path, each slightly offset. The hand-made quality is the point — layered, imprecise strokes that build confidence through repetition.

Parallel hatch

Lines running in the same direction with controlled spacing to create tonal gradation. Closer and thicker lines read as shadow; sparse, lighter lines create highlight or mid-tone.

Double line

Two parallel strokes that travel the same path at a fixed offset. Used in cartography for roads, in architecture for walls, and in illustration for ribbon-like three-dimensional forms.

Zigzag line

Sharp reversals of direction at a consistent angle. Evokes tension, energy, or instability — used to represent lightning, sound waves, and dynamic mechanical forces.

Weighted / expressive line

Weight shifts freely and intuitively in response to the emotional content of the mark rather than any consistent rule. The defining characteristic of expressive and gestural illustration.

Radiating line

Lines emanating from a single focal point in all directions. Implies light source, explosion, or importance — the visual equivalent of emphasis and energy bursting outward.

Atmospheric / fading line

Opacity or weight diminishes toward one or both ends, suggesting distance, air, or dissolving form. Borrowed from aerial perspective — the further away, the less defined the edge.