It may be (tuchon). Neuter accusative of second aorist active participle of tugchanō used as an adverb (in Plato and Xenophon, but nowhere else in N.T.).
Or even winter (ē kai paracheimasō). Future active of late verb paracheimazō (cheimōn, winter). See note on Act 27:12; note on Act 28:11; and note on Tit 3:12. He did stay in Corinth for three months (Act 20:3), probably the coming winter.
Whithersoever I go (hou ean poreuōmai). Indefinite local clause with subjunctive. As a matter of fact, Paul had to flee from a conspiracy in Corinth (Act 20:3).