| agelong | (adjective) lasting through all time | - |
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| daylong | (adjective) lasting through an entire day | - |
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| headlong | (adjective) with the head foremost | Synonyms: headfirst |
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| (adjective) excessively quick | Synonyms: hasty |
| headstrong | (adjective) habitually disposed to disobedience and opposition | Synonyms: froward, self-willed, wilful, willful |
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| hourlong | (adjective) lasting for an hour | - |
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| lifelong | (adjective) continuing through life | Synonyms: womb-to-tomb |
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| livelong | (adjective) (of time) constituting the full extent or duration | - |
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| long | (adjective) good at remembering | Synonyms: recollective, retentive, tenacious |
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| (adjective) primarily spatial sense; of relatively great or greater than average spatial extension or extension as specified | - |
| (adjective) primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified | - |
| (adjective) (of speech sounds or syllables) of relatively long duration | - |
| (adjective) holding securities or commodities in expectation of a rise in prices | - |
| (adjective) having or being more than normal or necessary | - |
| (adjective) planning prudently for the future | Synonyms: farseeing, farsighted, foresighted, foresightful, longsighted, prospicient |
| (adjective) of relatively great height | - |
| (adjective) involving substantial risk | - |
| monthlong | (adjective) last through a month | - |
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| nightlong | (adjective) lasting, open, or operating through the whole night | Synonyms: all-night, overnight |
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| oblong | (adjective) deviating from a square or circle or sphere by being elongated in one direction | - |
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| (adjective) (of a leaf shape) having a somewhat elongated form with approximately parallel sides | - |
| sidelong | (adjective) inclining or directed to one side | - |
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| (adjective) (used especially of glances) directed to one side with or as if with doubt or suspicion or envy | Synonyms: askance, askant, asquint, squint-eyed, squint, squinty |
| (adjective) situated at or extending to the side | Synonyms: lateral |
| singsong | (adjective) uttered in a monotonous cadence or rhythm as in chanting | Synonyms: chantlike, intoned |
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| strong | (adjective) having strength or power greater than average or expected | - |
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| (adjective) having a strong physiological or chemical effect | Synonyms: potent, stiff |
| (adjective) being distilled rather than fermented; having a high alcoholic content | Synonyms: hard |
| (adjective) strong and sure | Synonyms: firm |
| (adjective) freshly made or left | Synonyms: warm |
| (adjective) not faint or feeble | - |
| (adjective) immune to attack; incapable of being tampered with | Synonyms: impregnable, inviolable, secure, unassailable, unattackable |
| (adjective) of verbs not having standard (or regular) inflection | - |
| (adjective) having or wielding force or authority | Synonyms: potent |
| (adjective) of good quality and condition; solidly built | Synonyms: solid, substantial |
| weeklong | (adjective) lasting through a week | Synonyms: seven-day |
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| wrong | (adjective) contrary to conscience or morality or law | - |
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| (adjective) not correct; not in conformity with fact or truth | Synonyms: incorrect |
| (adjective) based on or acting or judging in error | - |
| (adjective) characterized by errors; not agreeing with a model or not following established rules | Synonyms: faulty, incorrect |
| (adjective) not appropriate for a purpose or occasion | Synonyms: improper |
| (adjective) badly timed | Synonyms: ill-timed, unseasonable, untimely |
| (adjective) used of the side of cloth or clothing intended to face inward | - |
| (adjective) not functioning properly | Synonyms: amiss, awry, haywire |
| (adjective) not in accord with established usage or procedure | Synonyms: incorrect |
| yearlong | (adjective) lasting through a year | - |
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