| azure | (adjective) of a deep somewhat purplish blue color similar to that of a clear October sky | Synonyms: bright blue, cerulean, sky-blue |
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| cocksure | (adjective) marked by excessive confidence | Synonyms: overconfident, positive |
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| demure | (adjective) affectedly modest or shy especially in a playful or provocative way | Synonyms: coy, overmodest |
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| footsure | (adjective) not liable to stumble or fall | Synonyms: sure-footed, surefooted |
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| future | (adjective) yet to be or coming | - |
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| (adjective) a verb tense or other formation referring to events or states that have not yet happened | - |
| (adjective) (of elected officers) elected but not yet serving | Synonyms: next, succeeding |
| (adjective) effective in or looking toward the future | - |
| immature | (adjective) not yet mature | - |
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| (adjective) characteristic of a lack of maturity | - |
| (adjective) (used of living things especially persons) in an early period of life or development or growth | Synonyms: young |
| (adjective) (of birds) not yet having developed feathers | Synonyms: unfledged |
| (adjective) not fully developed or mature; not ripe | Synonyms: green, unripe, unripened |
| impure | (adjective) (used of persons or behaviors) immoral or obscene | - |
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| (adjective) combined with extraneous elements | - |
| (adjective) having a physical or moral blemish so as to make impure according to dietary or ceremonial laws | Synonyms: unclean |
| insecure | (adjective) lacking self-confidence or assurance | - |
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| (adjective) lacking in security or safety | Synonyms: unsafe |
| (adjective) not firm or firmly fixed; likely to fail or give way | - |
| (adjective) not safe from attack | Synonyms: unsafe |
| mature | (adjective) having reached full natural growth or development | - |
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| (adjective) characteristic of maturity | - |
| (adjective) (of birds) having developed feathers or plumage; often used in combination | Synonyms: fledged |
| (adjective) fully developed or matured and ready to be eaten or used | Synonyms: ripe |
| (adjective) fully considered and perfected | Synonyms: matured |
| miniature | (adjective) being on a very small scale | - |
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| obscure | (adjective) difficult to find | Synonyms: hidden |
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| (adjective) marked by difficulty of style or expression | Synonyms: dark |
| (adjective) not drawing attention | Synonyms: unnoticeable |
| (adjective) not famous or acclaimed | Synonyms: unknown, unsung |
| (adjective) not clearly expressed or understood | Synonyms: vague |
| (adjective) remote and separate physically or socially | Synonyms: apart, isolated |
| premature | (adjective) born after a gestation period of less than the normal time | - |
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| (adjective) uncommonly early or before the expected time | Synonyms: untimely |
| (adjective) too soon or too hasty | Synonyms: previous |
| pure | (adjective) (used of persons or behaviors) having no faults; sinless | - |
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| (adjective) free of extraneous elements of any kind | - |
| (adjective) (of color) being chromatically pure; not diluted with white or grey or black | Synonyms: saturated |
| (adjective) in a state of sexual virginity | Synonyms: vestal, virgin, virginal, virtuous |
| (adjective) free from discordant qualities | - |
| (adjective) concerned with theory and data rather than practice; opposed to applied | - |
| (adjective) without qualification; used informally as (often pejorative) intensifiers | Synonyms: arrant, complete, consummate, double-dyed, everlasting, gross, perfect, sodding, staring, stark, thorough, thoroughgoing, unadulterated, utter |
| secure | (adjective) free from fear or doubt; easy in mind | Synonyms: unafraid, untroubled |
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| (adjective) free from danger or risk | - |
| (adjective) not likely to fail or give way | - |
| (adjective) immune to attack; incapable of being tampered with | Synonyms: impregnable, inviolable, strong, unassailable, unattackable |
| (adjective) financially safe | Synonyms: dependable, good, safe |
| sure | (adjective) having or feeling no doubt or uncertainty; confident and assured | Synonyms: certain |
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| (adjective) certain to occur; destined or inevitable | Synonyms: certain |
| (adjective) exercising or taking care great enough to bring assurance | Synonyms: certain |
| (adjective) reliable in operation or effect | Synonyms: certain |
| (adjective) physically secure or dependable | - |
| (adjective) certain not to fail | - |
| (adjective) infallible or unfailing | - |
| (adjective) (of persons) worthy of trust or confidence | Synonyms: trusted |
| (adjective) impossible to doubt or dispute | Synonyms: indisputable |
| unsure | (adjective) lacking or indicating lack of confidence or assurance | Synonyms: incertain, uncertain |
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| (adjective) lacking self-confidence | Synonyms: diffident, shy, timid |