Words starting with A, then T, then I, then O, ending in S
390 words fit this spine. The 240 most recognizable are listed below, longest and commonest first. They start with A, end with S, and contain T then I then O in that order in between — not necessarily side by side.
- aardvark doesn't fit: it starts with A but ends with K, not S.
- abacus doesn't fit: it has the right ends but no T in the middle.
- abnormalities doesn't fit: it has every letter of ATIOS but they don't appear in order inside it.
7-letter words
actions
8-letter words
actinons, alations, amotions, antiboss, antilogs
9-letter words
ablations, ablutions, abortions, abutilons, actinoids, adaptions, additions, adnations, adoptions, aerations, agnations, ambitions, ambitious, antiatoms, antidotes, atrocious, auditions
10-letter words
abductions, abjections, abolitions, abruptions, abstemious, accretions, actionless, activators, actuations, acylations, addictions, adductions, adorations, adulations, advections, affections, agitations, altiplanos, andantinos, animations, anthelions, antibioses, antibiosis, antibodies, anticodons, antiheroes, antiknocks, antilogies, artichokes, attentions
11-letter words
abdications, aberrations, abjurations, abnegations, abreactions, abrogations, absolutions, absorptions, abstentions, abstentious, accusations, actinolites, actinomyces, activations, adaptations, adjunctions, adjurations, admirations, admonitions, adsorptions, advocations, aetiologies, affixations, afflictions, alienations, alkylations, allegations, allocations, allocutions, alterations, ambulations, ammunitions, amputations, angulations, annexations, annotations, annulations, antibaryons, antibiotics, antileptons, aspirations, assumptions
12-letter words
abominations, abortionists, abstractions, acceptations, acclamations, acclimations, acetylations, acidulations, acquisitions, actinometers, actinomycins, adoptionisms, adoptionists, adscititious, adumbrations, adventitious, aestivations, affectations, affiliations, affirmations, aggradations, aggravations, aggregations, alleviations, altercations, alternations, altitudinous, ambitionless, amentiferous, ammoniations, amontillados, analyzations, anodizations, anthophilous, antiboycotts, anticathodes, anticipators, anticyclones, antifashions, antiheroines, antimitotics, applications, associations
13-letter words
abbreviations, abolitionisms, abolitionists, accelerations, accentuations, accumulations, actinometries, actinomycetes, actinomycoses, actinomycosis, adjudications, adulterations, affectionless, agglutinogens, aldolizations, alimentations, alliterations, amalgamations, ambitiousness, ameliorations, amortizations, annihilations, annunciations, antibourgeois, anticipations, anticolonials, anticonsumers, antielectrons, antiestrogens, antifrictions, antiglobulins
14-letter words
abstemiousness, accommodations, accreditations, acculturations, accustomations, acetaminophens, acetifications, acidifications, actinomorphies, actinomycetous, actualizations, afforestations, agglomerations, agglutinations, alloantibodies, amplifications, anglicizations, animalizations, annexationists, anthraquinones, anticoagulants, anticommunisms, anticommunists, anticorrosives, antiformalists, antilogarithms, antimetabolics, antimicrobials, appropriations
15-letter words
abstractionisms, abstractionists, administrations, aerosolizations, alkalinizations, allegorizations, ambitiousnesses, ammonifications, antialcoholisms, anticarcinogens, anticonvulsants, anticonvulsives, anticorruptions, antidepressions, antimetabolites
16-letter words
abstemiousnesses, acclimatizations, alphabetizations, anesthesiologies, antiabortionists, antiaphrodisiacs, anticholinergics, anticolonialisms, anticolonialists, antiferromagnets
17-letter words
accommodationists, anesthesiologists, antiassimilations, anticonservations, antievolutionisms, antievolutionists
18-letter words
anagrammatizations, anticommercialisms
19-letter words
anticholinesterases, antiferromagnetisms
20-letter words
adrenocorticotropins, anticonservationists, antifluoridationists
21-letter words
adrenocorticosteroids, adrenocorticotrophins, anthropomorphizations, antiauthoritarianisms
Where this pattern came from
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Every word above follows this rule — see if you can find them under a clock.
How the rule works