WordWeb Online

1. For the most time
   "she stayed longest"

1. Primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified
   "a long life"; "a long boring speech"; "a long time"; "a long friendship"; "a long game"; "long ago"; "an hour long"
    
2. Primarily spatial sense; of relatively great or greater than average spatial extension or extension as specified
   "a long road"; "a long distance"; "contained many long words"; "ten miles long"
    
3. Of relatively great height
   "a race of long gaunt men"; "looked out the long French windows"
    
4. Good at remembering
   - retentive, recollective, tenacious
    
5. Holding securities or commodities in expectation of a rise in prices
   "is long on coffee"; "a long position in gold"
    
6. (of speech sounds or syllables) of relatively long duration
   "the English vowel sounds in 'bate', 'beat', 'bite', 'boat', 'boot' are long"
    
7. Involving substantial risk
   "long odds"
    
8. Planning prudently for the future
   "took a long view of the geopolitical issues"
   - farseeing, farsighted, foresighted, foresightful, prospicient, longsighted
    
9. Having or being more than normal or necessary
   "long on brains"; "in long supply"

See also: abundant, agelong, all-night, aware, bimestrial, chronic, continuing, daylong, drawn-out, durable, duration, eight-day, elongate, elongated, endless, eternal, extendable, extended, extendible, far, hourlong, interminable, lank, lasting, length, lengthened, lengthy, lifelong, long-acting, long-dated [Brit], long-drawn-out, longer, long-handled, longish, longitudinal, long-lasting, long-life, long-lived, longness, long-range, long-run, long-snouted, longstanding, long-staple, long-term, long-wool, long-wooled, mindful, monthlong, nightlong, oblong, overnight, perennial, pole-handled, polysyllabic, prolonged, protracted, provident, semipermanent, sesquipedalian, seven-day, stretch, tall, time-consuming, unending, unsound, weeklong, womb-to-tomb, yearlong

Antonym: short

Encyclopedia: Long, Long, Long Long, John Long, Long Way To Go Long, Long Ago Long, Broad, and Quickeye Long Long, James Long, Broad and Sharpsight Long, Somme Long, Slow Kisses Long, hard slog Long, Tall Weekend Long, OK Long, Long Way to Go Long, People's Republic of China Long, Oklahoma