Making plans
Arranging to see someone: wait, meet, decide, get in touch.
matsu
polite machimasuwait
待つ まつ 待ちます
Waiting for someone or something (X o matsu), and matte / chotto matte is the all-purpose 'hold on'.
eki de matteru ne.
I'll wait for you at the station.
駅で待ってるね。
eki de mattemasu ne.
I'll be waiting at the station.
駅で待ってますね。
matteru = 'I'll be waiting' as well as 'I'm waiting'.
au
polite aimasumeet; see (someone)
会う あう 会います
Meeting or seeing a person, planned or by chance, with the person marked by ni (or to for a mutual meet-up).
ashita nanji ni au?
What time should we meet tomorrow?
明日何時に会う?
ashita nanji ni aimashou ka?
What time shall we meet tomorrow?
明日何時に会いましょうか?
Homophone au 合う = fit / match (saizu ga au).
kimeru
polite kimemasudecide
決める きめる 決めます
Deciding on something (X ni kimeru = go with X) and asking or saying whether a decision is made (kimeta?, mada kimetenai).
shuumatsu no yotei mou kimeta?
Have you made plans for the weekend yet?
週末の予定もう決めた?
shuumatsu no yotei wa mou kimemashita ka?
Have you decided your weekend plans yet?
週末の予定はもう決めましたか?
kimatta = 'it's been decided' (no one named); kimeta = 'I/we decided'.
renraku suru
polite renraku shimasucontact; get in touch
連絡する れんらくする 連絡します
Getting in touch by any channel — text, call or message — and the standard way to close a plan (mata renraku suru ne), with renraku shite = let me know.
mata renraku suru ne.
I'll get back to you.
また連絡するね。
mata renraku shimasu ne.
I'll be in touch.
また連絡しますね。
The person contacted takes ni: senpai ni renraku suru.
Learn first: suru