Starchier is the comparative form of starchy.
Food that is starchier contains more starch—potatoes are starchier than leafy greens.
Behavior that is starchier is more formal and rigid: He became starchier around his in-laws than he was with his own family.
1. texture — stiffer, Less flexible, comparatively; crisper (Refrigerator humidity compartment); firmer (More resistant to pressure)
2. thickening — thicker, Of greater girth
3. formal — stiffer, Less flexible, comparatively; primmer (Introductory reading book); stuffier (More lacking ventilation)
Opposites
fabric rigidity/texturestarchier ≠ softer More yielding to touch; limper · floppier · droopier · silkier · unstarched
formality/mannerstarchier ≠ looser Less firmly secured; friendlier · warmer · chiller · folkier
food starch contentstarchier ≠ leafier With increased foliage