thin, slender, slim, slight, tenuous mean not thick, broad, abundant, or dense.

thin implies comparatively little extension between surfaces or in diameter, or it may imply lack of substance, richness, or abundance.

slender implies leanness or spareness often with grace and good proportion.

slim applies to slenderness that suggests fragility or scantiness.

slight implies smallness as well as thinness.

tenuous implies extreme thinness, sheerness, or lack of substance and firmness.

neglect, disregard, ignore, overlook, slight, forget mean to pass over without giving due attention.

neglect implies giving insufficient attention to something that merits one's attention.

disregard suggests voluntary inattention.

ignore implies a failure to regard something obvious.

overlook suggests disregarding or ignoring through haste or lack of care.

slight implies contemptuous or disdainful disregarding or omitting.

forget may suggest either a willful ignoring or a failure to impress something on one's mind.