Adjacent Words

ad- definitions

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Merriam Webster's

or ac- or af- or ag- or al- or ap- or as- or at- prefix Etymology: Middle English, from Anglo-French & Latin; Anglo-French, from Latin, from ad — more at at 1. to ; toward — usually ac- before c, k, or q <acculturation> and af- before f <affluent> and ag- before g <aggradation> and al- before l <alliteration> and ap- before p <apportion> and as- before s <assuasive> and at- before t <attune> and ad- before other sounds but sometimes ad- even before one of the listed consonants <adsorb> 2. near ; adjacent to — in this sense always in the form ad- <adrenal>

Oxford Reference Dictionary

prefix (also a- before sc, sp, st, ac- before c, k, q, af- before f, ag- before g, al- before l, an- before n, ap- before p, ar- before r, as- before s, at- before t) 1 with the sense of motion or direction to, reduction or change into, addition, adherence, increase, or intensification. 2 formed by assimilation of other prefixes (accurse; admiral; advance; affray). Etymology: (sense 1) (through OF a-) f. L ad to: (sense 2) a- repr. various prefixes other than ad-

Webster's 1913 Dictionary

Ad- Ad- [A Latin preposition, signifying to. See At.] As a prefix ad- assumes the forms ac-, af-, ag-, al-, an-, ap-, ar-, as-, at-, assimilating the d with the first letter of the word to which ad- is prefixed. It remains unchanged before vowels, and before d, h, j, m, v. Examples: adduce, adhere, adjacent, admit, advent, accord, affect, aggregate, allude, annex, appear, etc. It becomes ac- before qu, as in acquiesce.