anxious adj.

Proto-Indo-European root meaning "tight, painfully constricted, painful."

It forms all or part of: agnail; anger; angina; angry; angst; anguish; anxious; hangnail; quinsy.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit amhu- "narrow," amhah "anguish;" Armenian anjuk "narrow;" Lithuanian ankštas "narrow;" Greek ankhein "to squeeze," ankhone "a strangling;" Latin angere "to throttle, torment;" Old Irish cum-ang "straitness, want;" Old English enge "narrow, painful," Old Norse angra "to grieve, vex, distress," Gothic aggwus "narrow."

1520s, "apprehension caused by danger, misfortune, or error, uneasiness of mind respecting some uncertainty, a restless dread of some evil," from Latin anxietatem (nominative anxietas) "anguish, anxiety, solicitude," noun of quality from anxius "uneasy, troubled in mind" (see anxious).

It was sometimes considered a pathological condition (1660s); modern psychiatric use dates to 1904. Age of Anxiety is from Auden's poem (1947). For "anxiety, distress," Old English had angsumnes, Middle English anxumnesse.

also over-anxious, "anxious to excess, unduly anxious," 1713, from over- + anxious. Related: Overanxiously; overanxiousness.