| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | inexact |
| Synonyms: | ambiguous, ambivalent, doubtful, dubitable, equivocal, indecisive, indefinite, indeterminate, marginal, open, problematic, uncertain, unclassifiable, unclear, undecided, unsettled |
| Antonyms: | certain, definite, exact, sure |
| Main Entry: | boundary |
| Part of Speech: | noun |
| Definition: | outer limit |
| Synonyms: | abuttals, ambit, barrier, beginning, border, borderland, borderline, bounds, brink, circumference, circumscription, compass, confines, edge, end, environs, extent, extremity, frame, fringe, frontier, hem, horizon, limits, line, line of demarcation, march, margin, mark, mere, mete, outline, outpost, pale, perimeter, periphery, precinct, purlieus, radius, rim, side, skirt, terminal, termination, terminus, verge |
| Antonyms: | inside, interior, minimum |
| Main Entry: | debatable |
| Part of Speech: | adjective |
| Definition: | controversial |
| Synonyms: | arguable, between rock and hard place, between sixes and sevens, betwixt and between, bone of contention, borderline, chancy, contestable, disputable, doubtful, dubious, iffy, in dispute, moot, mootable, open to question, problematic, problematical, questionable, the jury's out, touch and go, uncertain, undecided, unsettled, up for discussion |
| Antonyms: | certain, inarguable, incontrovertible, indubious, questionable, sure, uncontestable, undoubted |
| Main Entry: | doubtful |
| Part of Speech: | adjective |
| Definition: | questionable, unclear |
| Synonyms: | ambiguous, borderline, chancy, clouded, contingent, debatable, dicey, disreputable, doubtable, dubious, dubitable, equivocal, far-fetched, fat chance, fishy, hazardous, hazy, iffy, impugnable, inconclusive, indecisive, indefinite, indeterminate, indistinct, insecure, long shot, obscure, on thin ice, open, pending, precarious, problematic, shady, sneaky*, speculative, suspect, suspicious, touch-and-go, touchy, uncertain, unconfirmed, undecided, uneasy, unsettled, unstable, unsure, up for grabs |
| Notes: | a person is capable of doubting, whereas a thing is dubitable; dubious, unlike doubtful, carries the connotation of suspicion |
| Antonyms: | certain, clear, confirmed, decided, definite, exact, resolved, settled, unquestionable |
| Main Entry: | end |
| Part of Speech: | noun |
| Definition: | extreme, limit |
| Synonyms: | borderline, bound, boundary, butt end, confine, cusp, deadline, edge, extent, extremity, foot, head, heel, limitation, neb, nib, point, prong, spire, stub, stump, tail, tail end, term, terminal, termination, terminus, tip, top, ultimate |
| Antonyms: | beginning, cause, foundation, origin |
| Main Entry: | equivocal |
| Part of Speech: | adjective |
| Definition: | doubtful, uncertain |
| Synonyms: | ambiguous, ambivalent, amphibological, borderline, clear as mud, clouded, disreputable, dubious, evasive, fishy, fuzzy*, hazy*, indefinite, indeterminate, indistinct, misleading, muddled, muzzy, oblique, obscure, open, problematic, puzzling, questionable, suspect, suspicious, tenebrous, unclear, undecided, unexplicit, unintelligible, vague, with mixed feelings |
| Notes: | ambiguous is vague by accident or intent; equivocal is vague by intent |
| Antonyms: | certain, clear, definite, determined, obvious, plain, sure, unequivocal, unquestionable |
| Main Entry: | fringe |
| Part of Speech: | noun |
| Definition: | border, trimming |
| Synonyms: | binding, borderline, brim, brink, edge, edging, flounce, hem, limit, mane, march, margin, outside, outskirts, perimeter, periphery, rickrack, ruffle, skirt, tassel, verge |
| Antonyms: | center, inside, interior, middle |
| Main Entry: | frontier |
| Part of Speech: | noun |
| Definition: | boundary |
| Synonyms: | borderland, borderline, bound, confines, edge, limit, march, perimeter, verge |
| Main Entry: | line |
| Part of Speech: | noun |
| Definition: | mark, stroke; border |
| Synonyms: | band, bar, borderline, boundary, channel, configuration, contour, crease, dash, delineation, demarcation, edge, figuration, figure, frontier, furrow, groove, limit, lineament, lineation, outline, profile, rule, score, scratch, silhouette, streak, stripe, tracing, underline, wrinkle |