Synonyms and related words :
accordant, alike, arrowlike, articulated, automatic, balanced, bright, catenated, ceaseless, chattering, concatenated, connected, consistent, consonant, constant, continual, continued, continuing, continuous, correspondent, cyclical, dead straight, direct, downy, endless, entire, equable, equal, even, featureless, flat, fresh, gapless, glabrate, glabrescent, glabrous, harmless, homogeneous, horizontal, immediate, immutable, in a line, incessant, intact, interminable, invariable, inviolate, irreversible, joined, jointless, leiotrichous, level, lineal, linear, linked, machine gun, measured, mechanical, methodic, mint, monolithic, monotonous, never-ending, nonstop, of a piece, one-way, ordered, orderly, oscillating, perennial, perfect, periodic, perpetual, persistent, plane, pristine, pulsating, rapid, rectilineal, rectilinear, recurrent, regular, repeated, repetitive, right, robotlike, round-the-clock, ruler-straight, running, scatheless, seamless, serried, smooth, smooth-shaven, smooth-textured, sound, stable, staccato, steadfast, steady, straight, straight-cut, straight-front, straight-side, straightaway, straightforward, straightway, streamlined, stuttering, suave, sustained, systematic, TRUE, twenty-four-hour, unbending, unbent, unbowed, unbruised, unceasing, unchangeable, unchanged, unchanging, unconquered, uncurved, undamaged, undefaced, undeflected, undeformed, undemolished, undestroyed, undeviating, undifferentiated, undistorted, undiversified, unending, unenthralled, unfaded, ungoverned, unharmed, unhurt, unidirectional, uniform, unimpaired, uninjured, unintermitted, unintermittent, unintermitting, uninterrupted, unmaimed, unmangled, unmarked, unmarred, unquelled, unrelieved, unremitting, unrough, unroughened, unruffled, unscarred, unscathed, unscratched, unshattered, unspoiled, unstopped, unsubdued, unsubject, unswerving, untamed, untorn, untouched, unturned, unvanquished, unvaried, unvarying, unwithered, unworn, upright, vertical, vibrating, virgin