system — an assemblage or combination of things or parts forming a complex or unitary whole: a mountain system; a railroad system.
tickle — to touch or stroke lightly with the fingers, a feather, etc., so as to excite a tingling or itching sensation in; titillate.
Three-syllable rhymes
biblical — Biblical means contained in or relating to the Bible.
bicycle — A bicycle is a vehicle with two wheels which you ride by sitting on it and pushing two pedals with your feet. You steer it by turning a bar that is connected to the front wheel.
clinical — Clinical means involving or relating to the direct medical treatment or testing of patients.
criminal — A criminal is a person who regularly commits crimes.
critical — If a person is critical or in a critical condition in hospital, they are seriously ill.
cyclical — A cyclical process is one in which a series of events happens again and again in the same order.
cynical — If you describe someone as cynical, you mean they believe that people always act selfishly.
digital — of, relating to, or using numerical calculations.
fictional — invented as part of a work of fiction: Sherlock Holmes is a fictional detective.
miscible — capable of being mixed: miscible ingredients.
mystical — mystic; of or relating to supernatural agencies, affairs, occurrences, etc.: a strange, mystical experience.
mythical — pertaining to, of the nature of, or involving a myth.
optical — of, relating to, or applying optics or the principles of optics.
physical — of or relating to the body: physical exercise.
practical — of or relating to practice or action: practical mathematics.
skeptical — doubtful about a particular thing: My teacher thinks I can get a scholarship, but I'm skeptical.
tricycle — a vehicle, especially one for children, having one large front wheel and two small rear wheels, propelled by foot pedals.
typical — of the nature of or serving as a type or representative specimen.
whimsical — given to whimsy or fanciful notions; capricious: a pixyish, whimsical fellow.
Four-or-more syllable rhymes
atypical — Someone or something that is atypical is not typical of its kind.
cylindrical — Something that is cylindrical is in the shape of a cylinder.
inimical — adverse in tendency or effect; unfavorable; harmful: a climate inimical to health.
political — of, relating to, or concerned with politics: political writers.
preclinical — of or relating to the period prior to the appearance of the symptoms.
predictable — able to be foretold or declared in advance: New technology allows predictable weather forecasting.
rabbinical — of or relating to rabbis or their learning, writings, etc.
reciprocal — given or felt by each toward the other; mutual: reciprocal respect.
statistical — of, pertaining to, consisting of, or based on statistics.
subliminal — existing or operating below the threshold of consciousness; being or employing stimuli insufficiently intense to produce a discrete sensation but often being or designed to be intense enough to influence the mental processes or the behavior of the individual: a subliminal stimulus; subliminal advertising.
umbilical — of, relating to, or characteristic of an umbilicus or umbilical cord.
uncritical — not inclined or able to judge, especially by the application of comparative standards: an uncritical reader.
untypical — of the nature of or serving as a type or representative specimen.
Four-or-more syllable rhymes
analytical — An analytical way of doing something involves the use of logical reasoning.
apolitical — Someone who is apolitical is not interested in politics.
egotistical — Excessively conceited or absorbed in oneself; self-centered.
hypercritical — excessively or meticulously critical; overcritical.
hypocritical — of the nature of hypocrisy, or pretense of having virtues, beliefs, principles, etc., that one does not actually possess: The parent who has a “do what I say and not what I do” attitude can appear hypocritical to a child.
impermissible — not permissible or allowable; unallowable.
indivisible — not divisible; not separable into parts; incapable of being divided: one nation indivisible.
metaphysical — pertaining to or of the nature of metaphysics.
prototypical — the original or model on which something is based or formed.
Four-or-more syllable rhymes
geopolitical — the study or the application of the influence of political and economic geography on the politics, national power, foreign policy, etc., of a state.
stereotypical — a process, now often replaced by more advanced methods, for making metal printing plates by taking a mold of composed type or the like in papier-mâché or other material and then taking from this mold a cast in type metal.