ad-

Borrowed from Latin ad-. Doublet of at-.

ad-

1. (no longer productive) near, at.

   adrenal

2. (no longer productive) toward, to, tendency, or addition.

   adjoin

• “ad-”, in The American Heritage Dictionary of the English Language, 4th edition, Boston, Mass.: Houghton Mifflin, 2000, →ISBN.
• “ad-”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.

• D. A., D.A., DA, Da, da

ad-

1. ad-

Prefix form of ad. Also based on Latin ad-.

ad-

1. to (indicating that to which there is movement, tendency or position, with or without arrival)

   portar (“carry, bear”) → adportar (“bring, carry (to a person or place)”)

   ube (“where”) → adube (“where to (with motion), whither”)

For euphony, ad- can assimilate the attached stem's initial consonant, becoming: a- (before sc, sp and st), ac- (before c and q), af- (before f), ag-, al-, ap-, ar-, as-, or at-.

From the Latin preposition ad (“to, towards”), in turn from Proto-Italic *ad, from Proto-Indo-European *h₂éd (“near, at”).

ad-

1. to
2. usually prefixed to verbs, in which cases it often has the effect of intensifying the verbal action

ad-

1. your (singular)

From Proto-Celtic *ad-, from Proto-Indo-European *h₂éd (“near, at”). Cognates include Latin ad and English at.

ad-

1. to, towards
2. in many compounds, it has a purely intensive sense
3. augment infix used instead of ro- on verbs whose first prefix is com- and the stressed syllable starts with a consonant

   ‎con·birt (“you conceived”) + ‎ad- → ‎con·abairt (“you have conceived”) (forms of con·beir)

   ‎con·melt (“(s)he rubbed”) + ‎ad- → ‎con·amailt (“(s)he had rubbed”) (forms of con·meil)

   ‎·coscrad (“not destroyed”) + ‎ad- → ‎·comscarad (“had not destroyed”) (past subjunctive prototonic forms of con·scara)

   ‎con·gab (“it contained”) + ‎ad- → ‎con·acab (“it had contained”) (forms of con·gaib)

   ‎*·cotla + ‎ad- → ‎·comthala (subjunctive forms of con·tuili (“to sleep”))

• ad-, when used as an augment affix, vanishes in prototonic forms due to syncope. However, its presence may be detected via the different syncope patterns between forms augmented with ad- and those that were not.
• In deuterotonic verbs where ad- is the first prefix and the next sound is /t/, the d in the prefix may be dropped in its spelling.

• Irish: a- (no longer productive)

• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “ad-”, in eDIL: Electronic Dictionary of the Irish Language

• a-

ad-

1. ad- (near; at)

• at-

From Proto-Brythonic *ate-, from Proto-Celtic *ati-.[1] from Proto-Indo-European *éti.[2] Cognate with Cornish as-, English ed-, Latin et (“and”), Sanskrit अति (ati, “over-”).

• IPA^(key): /ad/

ad-

1. again, back, re-

   ‎ad- + ‎llais (“voice”) → ‎adlais (“echo”)

   ‎ad- + ‎talu (“to pay”) → ‎ad-dalu (“to refund”)

   ‎ad- + ‎blas (“taste”) → ‎adflas (“aftertaste”)

   Synonym: ail-

2. affirmative prefix, emphasises prefixed word

   ‎ad- + ‎cas (“hated, nasty”) → ‎atgas (“hateful, detestable”)