Princeton's WordNet

1. green light, go-ahead(noun)

   a signal to proceed

2. enterprise, enterprisingness, initiative, go-ahead(verb)

   readiness to embark on bold new ventures

3. go ahead, plow ahead(verb)

   proceed (with a plan of action)

   "He went ahead with the project"

Kernerman English Learner's Dictionary

1. go-ahead(noun)ʊ

   to give/get permission

   We got the go-ahead to use the material.

Wiktionary

1. go-ahead(Noun)

   Approval, agreement, or instruction to begin or proceed.

   You can start as soon as you get the go-ahead from the president.

2. go-ahead(Adjective)

   A score which gives the scoring team or player the lead in the game.

   The pitcher gave up the go-ahead run in the top of the ninth inning.

3. go-ahead(Adjective)

   Progressive; exerting leadership.

• vooruitgaanAfrikaans
• ناجِح، مُتَقَدِّمArabic
• прогресиращBulgarian
• progressistaPortuguese (BR)
• úspěšný, perspektivníCzech
• rührigGerman
• foretagsom; initiativrigDanish
• προοδευτικόςGreek
• emprendedor, enérgico, dinámicoSpanish
• edasipüüdlikEstonian
• در حال پیشرفتFarsi
• edistyksellinenFinnish
• dynamiqueFrench
• מתקדםHebrew
• आगे बढ़ोHindi
• uspješan, napredanCroatian
• agilis, menőHungarian
• majuIndonesian
• framsækinnIcelandic
• intraprendenteItalian
• 野心的なJapanese
• 진취적인Korean
• progresyvusLithuanian
• progresīvs; priekšgalā esošsLatvian
• majuMalay
• vooruitstrevend, voortvarendDutch
• fremadstrebende, foretaksomNorwegian
• rzutkiPolish
• در حال پیشرفتPersian
• د بریالی توب په حال کیPashto
• progressistaPortuguese
• предприимчивый; успешныйRussian
• perspektívaSlovak
• napredenSlovenian
• uspešanSerbian
• framåtsträvande, företagsamSwedish
• ซึ่งประสบความสำเร็จThai
• ilerleyen, gelişenTurkish
• 有進展的Chinese (Trad.)
• процвітаючийUkrainian
• کامیاب اور ترقی پزیرUrdu
• tiến bộVietnamese
• 取得进展Chinese (Simp.)