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Straight: P. and V. εὐθύ, εὐθύς (rare).
Directly towards: Ar. and P. εὐθύ (gen.). V. εὐθύς (gen.).
Immediately: P. and V. εὐθύς, εὐθέως, ὡς τάχιστα, αὐτίκα, παραυτίκα, Ar. and P. παραχρῆμα; see immediately.
Expressly: P. διαρρήδην.
Simply: P. and V. ἁπλῶς.