| Main Entry: | |
| Part of Speech: | noun |
| Definition: | sign |
| Synonyms: | barometer, beacon, clue, dial, gauge, guide, hint, index, mark, meter, omen, pointer, signal, symbol, warning |
| Main Entry: | gauge |
| Part of Speech: | noun |
| Definition: | measure, standard |
| Synonyms: | barometer, basis, benchmark, bore, capacity, check, criterion, degree, depth, example, exemplar, extent, guide, guideline, height, indicator, magnitude, mark, meter, model, norm, pattern, rule, sample, scale, scope, size, span, test, thickness, touchstone, type, width, yardstick |
| Antonyms: | estimate, guess |
| Main Entry: | index |
| Part of Speech: | noun |
| Definition: | indication |
| Synonyms: | basis, clue, evidence, formula, guide, hand, indicant, indication, indicator, indicia, mark, model, needle, pointer, ratio, rule, sign, significant, symbol, symptom, token |
| Main Entry: | key |
| Part of Speech: | noun |
| Definition: | answer, solution |
| Synonyms: | blueprint, brand, cipher, clue, code, core, crux, cue, earmark, explanation, fulcrum, guide, hinge, index, indicator, interpretation, lead, lever, marker, means, nexus, nucleus, passport, password, pivot, pointer, root, sign, symptom, ticket, translation |
| Antonyms: | question |
| Main Entry: | prediction |
| Part of Speech: | noun |
| Definition: | declaration made in advance |
| Synonyms: | augury, cast, conjecture, crystal gazing, divination, dope, forecast, forecasting, foresight, foretelling, fortune-telling, guess, horoscope, hunch, indicator, of event anticipation, omen, palmistry, presage, prevision, prognosis, prognostication, prophecy, soothsaying, surmising, tip, vaticination, zodiac |
| Main Entry: | signal |
| Part of Speech: | noun |
| Definition: | indication; authorization |
| Synonyms: | Mayday, SOS, alarm, alert, beacon, bleep, blinker, cue, flag, flare, gesture, go-ahead, green light, high sign, indicator, mark, movement, nod, okay*, omen, sign, tocsin, token, wink |
| Main Entry: | yardstick |
| Part of Speech: | noun |
| Definition: | gauge |
| Synonyms: | barometer, basis, benchmark, criterion, example, guide, guideline, indicator, mark, measure, meter, model, norm, rule, sample, scale, standard, tape measure, test |
| Main Entry: | magnetic needle |
| Part of Speech: | noun |
| Definition: | direction finder |
| Synonyms: | compass needle, indicator, needle |
| Main Entry: | straw in the wind |
| Part of Speech: | noun |
| Definition: | indication of coming event |
| Synonyms: | harbinger, indication, indicator, omen, portent, sign, sign of the times, slight hint |