聞いてみよっと

I'll ask

→ 聞く
phrase Rare #39,878
I'll ask Casual, often used as self-talk to express deciding to try asking someone. It is a conversational shortening of 聞いてみようっと.
JA: あとで母に聞いてみよっと。
EN: I'll ask my mom later.

トム僕たちと一緒に行きたい聞いてみよっと

I think I'll ask Tom if he wants to come with us.

授業が終わったら先生に聞いてみよっと

I’ll ask the teacher when class is over.

トム聞いてみよっと

I think I’ll ask Tom.

明日トムそれ聞いてみよっと

I’ll ask Tom about that tomorrow.