tentatively

(adv) - If you do something tentatively, you do it without confidence or certainty, or because it may be changed later.

• Synonyms: conditionally, maybe, doubtfully, wonderingly
• Antonyms: certainly, surely, definitely
• Etymology: 1580s Latin, from tentare meaning "to feel, try"
• Morphology: tentative - adj, tentacle - n
• Example: Reynie knocked tentatively on Mr. Curtain's door.