In this book, you will learn the meanings of 1425 useful 9-letter words. You will also find the names of the parts of speech they belong to. I have also given synonyms for most of these words. Sample this:

01 -- abasement (n.) action or behavior that brings you down or makes you lose your own prestige synonyms: debasement, denigration, disparagement]
02 -- abduction [n.] -- an act of illegally and forcefully taking sb away and keeping them as a prisoner, especially in order to get sth such as money for returning them [synonyms: kidnap, kidnapping]
03 -- abhorrent -- [n.] -- causing a feeling of strong hatred for a way of thinking or behaving for moral reasons [synonyms: detest, loathe, despise]
04 -- accretion [n.] -- (a). a layer of a substance or matter that is added to sth in a gradual manner or over a period of time | (b). the process of new layers or parts of a substance or matter being added to sth in a gradual manner or over a period of time
05 -- acyclovir [n.] -- an antiviral drug used in the treatment of herpes, shingles, chickenpox, etc.
06 -- adaptable [adj.] -- (a). to able to adjust or be adjusted to deal with new and different situations or conditions [synonym: flexible] | (b). to able to be modified or suited for a new use or purpose
07 -- adjective [n.] -- an adjective is a word that describes or modifies a noun such as a person or a thing
08 -- affecting [adj.] -- producing strong feelings of distress, pity, regret, sorrow, or sympathy, etc.
09 -- afterglow [n.] -- (a). the light in the sky after sunset | (b). a pleasant feeling that you feel after you have enjoyed a good experience; delight
09 -- agelessly [adv.] -- in a manner that seems to be never coming to an end or growing old [synonyms: everlastingly, timelessly]
10 -- aggravate [v.] -- (a). to intentionally irritate somebody [synonyms: annoy, exasperate] | (b).to make an unpleasant situation or an illness worse or more serious [synonyms: exacerbate, worsen]
11 -- alienable [adj.] -- able to be taken or given away to new ownership
12 -- ambiguous [adj.] -- (a). that can be understood or interpreted in more than one way; not having one obvious meaning [synonyms: indistinct, vague] | (b). not clearly stated or defined [synonym: inexplicable]
13 -- amorphous [adj.] -- (a). having no fixed, regular or distinct shape, design, form or structure [synonyms: formless, shapeless] | (b). having no definite character or nature | (c). lacking organization [synonyms: unstructured, vague]
14 -- anciently [adv.] -- Long ago
15 -- ancillary [adj.] -- (a). providing necessary support to the primary work or activities of an organization, system, etc. [synonyms: auxiliary, subsidiary] | (b). additional to something else but not as important [synonyms: secondary, supplementary ]
16 -- anecdotal [adj.] -- (of an account) possibly untrue or unreliable, because based on personal description or observations rather than proven facts [synonym: subjective]
17 -- animosity [n.] -- very strong aggressive and unfriendly feeling towards somebody [synonyms: acrimony, hostility]
18 -- appalling [adj.] -- extremely bad [synonyms: awful, shocking] | (b). extremely bad or poor
19 -- assonance [n.] -- repetition of vowel sounds followed by different consonant sounds. [Or, repetition of consonant sounds followed by different vowel sounds]
20 -- audacious [adj.] -- extremely courageous, confident or rude and willing to take risks in order to achieve something [synonyms: adventurous, daring, bold]
21 -- avalanche [n.] -- (a). a mass of snow, ice and rock falling down a mountainside | (b). a sudden arrival or occurrence of something in excess
22 -- awesomely [adv.] -- in a manner that is very impressive and often frightening [synonyms: amazingly, tremendously] | (b). in a manner that seems to be excellent or pleasurable