The fit words that actually change the next step.
This is not a 150-term nail-art dictionary. It covers only the language needed to measure a nail, evaluate a dry fit, describe a lift pattern, and preserve a reusable fit record.
Nail plateSidewallFree edgeCuticle lineBase shapeWidthWidth profileC-curveCurve mismatchContactContact zoneRockingPinchingSide gapCenter gapLift pointDry fitBetween sizesFinger-specific fitFit profile
- Nail plate
- The hard visible surface of the natural nail where a press-on sits. Fit checks should compare the artificial tip with the nail plate, not the surrounding skin.
- Sidewall
- The left or right boundary of the visible natural nail. Sidewall-to-sidewall coverage is a practical width check before adhesive.
See the related check → - Free edge
- The part of the natural nail that extends past the fingertip. Looking from this direction makes C-curve differences easier to see.
- Cuticle line
- The curved base area where the press-on approaches the skin. The artificial nail should follow the base shape without sitting on skin.
- Base shape
- The outline of the press-on near the cuticle end. A width match can still fail if the base shape conflicts with the natural nail outline.
- Width
- The side-to-side span of the natural nail or press-on. Press-On Fit Lab records natural-nail widths in millimeters rather than pretending printed size numbers are universal.
See the related check → - Width profile
- The complete set of width measurements for all ten nails. It is more portable across brands than memorizing a single preset label such as S or M.
See the related check → - C-curve
- The crosswise arch you see when looking at a nail from the free edge. A strong curve and a flat nail bed can match in width but still make poor contact.
See the related check → - Curve mismatch
- A fit problem where the artificial nail and natural nail have noticeably different crosswise arches. It may show up as side spring, pinching, or a hollow center.
- Contact
- How completely the underside of a dry-fitted press-on meets the natural nail surface. Large gaps or pivot points are fit clues before adhesive is added.
See the related check → - Contact zone
- A practical troubleshooting phrase for the area where the underside is actually touching the natural nail during a dry fit.
- Rocking
- A seesaw or pivoting movement when light pressure on one part of a dry-fitted press-on makes another part rise. It suggests unstable profile contact.
See the related check → - Pinching
- Uncomfortable inward pressure at the sides or elsewhere. A press-on should not be forced flat or worn through pain just because the width number appears correct.
See the related check → - Side gap
- Visible natural nail or open space beside the artificial tip. On this site, side-gap intent is handled inside the side-lifting and too-small fit paths rather than split into duplicate pages.
See the related check → - Center gap
- A hollow-looking space under the middle of the tip. It can be a profile/contact clue and is handled inside center-lifting and too-flat/too-curved troubleshooting.
See the related check → - Lift point
- The first place a bonded press-on starts to open. Cuticle, side, center, free-edge, and full-pop patterns lead to different first checks.
See the related check → - Dry fit
- Testing each press-on on the natural nail before glue or adhesive tabs. This establishes a baseline for width, curve, alignment, and rocking.
See the related check → - Between sizes
- When two neighboring press-on pieces are both imperfect in different ways. The decision should consider sidewall coverage, skin overlap, curve, stability, and how much safe filing the specific tip allows.
See the related check → - Finger-specific fit
- The idea that one finger can require a different size, curve, length, or alignment strategy from the rest of the hand. Thumbs are common examples.
See the related check → - Fit profile
- A saved record of widths, curve notes, and finger-specific adjustments for a reusable set. It helps make later wears repeatable without turning brand size numbers into a universal system.
See the related check →
Want to use these terms on a real set?
Start with the 3-point fit check.
Width, curve, and contact turn the vocabulary into an actual dry-fit decision.