Synonyms and related words :
after, arrowlike, attendant, cadet, catenary, clannish, consecutive, dead straight, diphyletic, direct, ensuing, ethnic, even, family, flat, following, genealogical, genetic, gentile, gentilic, horizontal, in a line, junior, later, level, linear, national, ordinal, phyletic, phylogenetic, posterior, progressive, puisne, racial, rectilineal, rectilinear, right, ruler-straight, sequent, sequential, serial, seriate, smooth, straight, straight-cut, straight-front, straight-side, streamlined, subsequent, succeeding, successional, successive, totemic, tribal, TRUE, unbending, unbent, unbowed, unbroken, uncurved, undeflected, undeviating, undistorted, uninterrupted, unswerving, unturned, upright, vertical, younger