Letter: i
- intellectual prodigy, genius, natural, prodigy, talent

- intellectual, academic, academician, affective, authority, bookish, brain, brainy, bright, cerebral, characteristic, conceptive, conceptual, constitutional, discursive, dispositional

- intellectualism, IQ, apprehension, calibrate, calibre, capacity, comprehension, conception, culture, erudition, humanism, ideation, intellect, intellectuality, intelligence quotient, knowledge

- intellectuality, IQ, apprehension, book learning, book madness, bookishness, calibre, capacity, classical scholarship, classicism, comprehension, conception, culture, deductive power, donnishness, erudition

- intellectualize, analyse, apply reason, cerebrate, cogitate, conceive, conceptualize, deduce, entertain ideas, exercise the mind, form ideas, generalize, hypothesize, ideate, infer, philosophize

- intellectuals, capacity, consciousness, faculty, parts, senses

- intelligence agent, double agent, operative, scout, secret agent, spotter, spy

- intelligence quotient, IQ, Rorschach test, achievement test, alpha test, apprehension, aptitude test, association test, beta test, calibre, capacity, comprehension, conception, controlled association test, deductive power, free association test

- intelligence test, IQ, Rorschach test, achievement test, alpha test, aptitude test, association test, beta test, controlled association test, free association test, inkblot test, intelligence quotient, interest inventory, mental test, personality test, psychological test

- intelligence work, bugging, cloak-and-dagger work, counter-espionage, counter-intelligence, electronic surveillance, espionage, following, intelligence, military intelligence, observation, secret police, secret service, shadowing, spying, stakeout

- intelligence, account, acquaintance, acumen, advice, alertness, announcement, apprehension, aptitude, aptness, astuteness, blue book, brain, brains, briefing, brightness

- intelligent, acute, adroit, alert, all-knowing, apprehending, apprehensive, apt, astute, au fait, aware, brainy, bright, brilliant, canny, cerebral

- intelligently, artfully, astutely, circumspectly, cleverly, consciously, considerately, cunningly, discerningly, discreetly, eruditely, judiciously, knowingly, learnedly, providently, prudently

- intelligibility, clarity, clear coast, clear road, ease, easiness, easy going, effortlessness, expressiveness, facileness, facility, freedom, lack of hindrance, meaningfulness, meatiness, pithiness

- intelligible, allegorical, apprehensible, articulate, associational, clear, cognizable, comprehensible, connotative, decipherable, definable, denotational, easily understood, easy to understand, expressive, extended

- intelligibly, clearly, comprehensibly, definitely, distinctly, expressly, plainly, simply

- intemperance, Bacchus, Dionysus, abandon, abandonment, boundlessness, conspicuous consumption, debauchery, dissipation, drunkenness, egregiousness, enormousness, exaggeration, excess, excessiveness, exorbitance

- intemperate, a bit much, abandoned, acute, all-devouring, bibulous, bitter, bolting, boundless, brutal, cramming, cutting, dissipative, drastic, drunken, easy come

- intemperately, beyond all bounds, excessively, exorbitantly, high, immoderately, inordinately, outrageously, over, over-much, overly, prodigally, to excess, to extremes, too, too much

- intemperateness, abandon, avarice, avidity, cupidity, drunkenness, exaggeration, excess, excessiveness, exorbitance, extravagance, extreme, extremism, extremity, gluttony, grasping

- intend, add up to, aim, aim at, aim to, arrange, aspire after, aspire to, assign, attempt, be after, calculate, cast, concert, connote, contemplate

- intendant, administrator, agent, captain, chatelaine, commandant, commander, conductor, deputy, director, executive, governor, impresario, manager, master, producer

- intended, advised, affianced, aimed, aimed at, assured, betrothed, bound, bride-to-be, calculated, committed, compromised, conscious, considered, contemplated, contracted

- intense cold, absolute zero, bitterness, chill, coldness, cool, cryogenics, freezing point, inclemency, keenness, nip, rigour, severity, sharpness

- intense darkness, dark, dead of night, night, obscurity, swarthiness

- intense, abandoned, ablaze, accentuated, active, acute, afire, aggravated, aggressive, agog, alert, all ears, all eyes, animated, ardent, assiduous

- intensely, abundantly, actively, acutely, amazingly, amply, animatedly, ardently, assiduously, astonishingly, awesomely, breathlessly, briskly, con brio, conspicuously, copiously

- intensification, acceleration, aggravation, amplification, annoyance, augmentation, beefing-up, blow-up, blowing up, concentration, condensation, consolidation, contentiousness, deepening, deliberate aggravation, deterioration

- intensified, accelerated, aggrandized, aggravated, amplified, annoyed, augmented, beefed-up, bloated, boosted, broadened, deepened, deliberately provoked, elevated, embittered, enhanced

- intensify, accelerate, accent, accentuate, accrue, accumulate, advance, aggrandize, aggravate, amplify, annoy, appreciate, augment, balloon, beef up, bloat
