Boggle/ˈbɑːɡl/ Definition 1 of 3Pro Tip 1/2Fearful Hesitation Use 'boggle' to express reluctance or fear when facing a challenging situation. He boggled at the extent of work needed. Pro Tip 2/2Strong Resistance 'Boggle at' suggests strong opposition or resistance to something potentially negative. She boggled at the idea of working weekends.