From a- + botón + -ar.

• IPA^(key): [aβotoˈaɾ]

abotoar (first-person singular present abotoo, first-person singular preterite abotoei, past participle abotoado)

1. (transitive) to button, to button up (to fasten with a button or buttons)

   Synonym: abrochar

   Antonym: desabotoar

2. (of a plant, intransitive) to bud (to form buds)

   Synonym: brotar

• desabotoar

• Antón Luís Santamarina Fernández, editor (2006–2013), “abotoar”, in Dicionario de Dicionarios da lingua galega [Dictionary of Dictionaries of the Galician language] (in Galician), Santiago de Compostela: Instituto da Lingua Galega
• Antón Luís Santamarina Fernández, Ernesto Xosé González Seoane, María Álvarez de la Granja, editors (2003–2018), “abotoar”, in Tesouro informatizado da lingua galega (in Galician), Santiago de Compostela: Instituto da Lingua Galega
• Rosario Álvarez Blanco, editor (2014–2024), “abotoar”, in Tesouro do léxico patrimonial galego e portugués (in Galician), Santiago de Compostela: Instituto da Lingua Galega, →ISSN

From a- +‎ botão (“button; bud”) +‎ -ar.

• Hyphenation: a‧bo‧to‧ar

abotoar (first-person singular present abotoo, first-person singular preterite abotoei, past participle abotoado)

1. to button up (to fasten with a button or buttons)

   Antonym: desabotoar

   Abotoa tua camisa.

   Button up your shirt.

2. (of a plant) to bud (to form buds)

   As rosas abotoaram.

   The roses have budded.

3. (nautical) to connect things by looping it with rope

• “abotoar”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “abotoar”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026