We found 4 dictionaries that define the word without a second thought:

General (3 matching dictionaries)

1. without a second thought: Cambridge Advanced Learner's Dictionary

Miscellaneous (1 matching dictionary)

2. without a second thought: Idioms

▸ Words similar to without a second thought ▸ Usage examples for without a second thought ▸ Idioms related to without a second thought ▸ Wikipedia articles (New!) ▸ Words that often appear near without a second thought ▸ Rhymes of without a second thought ▸ Invented words related to without a second thought