大 big

A big hippy wearing a big TIE DIED T-shirt.

This big fat hippy, legs apart, arms apart, waiting to hug you WHEN YOU LEAST EXPECT IT.

really like ★★★★★
大 (big) + 好 (like) = 大好き (really like)

that's terrible! ★★★★★
大 (big) + 変 (change) = 大変 (that's terrible!)

this has 2 meanings, both used equally often:

"Tony is tai hen!" , for instance, could mean:

a) I feel sorry for Tony because his job sucks and his girl is cheating.

b) Tony is a really scary, mean person.　

vital ★★★★☆
大 (big) + 事 (action/ incident) = 大事 (vital)

vital, important. Can also be used as a sort of goodbye - but only in cases where you're sort of worried about the person. Like if they're coming down with a cold, you'd say, "お大事に！”　instead of ”またね！”

adult ★★★☆☆ FP
大 (big) + 人 (person) = 大人 (adult)

adult, as opposed to minor, not as opposed to 'with clothes on.'

landlord ★★★☆☆ FP
大 (big) + 家 (home) = 大家 (landlord)

large-scale ★★☆☆☆ KUNKUN
大 (big) + 型 (type / proper way) = 大型 (large-scale )