even; for starters; to begin with
Used to single out an extreme or representative example, often implying that if this is the case, the rest is even more so. Common in negative evaluations.
彼は挨拶からして失礼だ。
He's rude even in his greetings.
この店は値段からして高すぎる。
This shop is too expensive, even just looking at the prices.
so; therefore; for that reason
Emphatic form of から, used to strongly mark a reason or cause. Sounds somewhat assertive or explanatory.
危ないからして、入ってはいけません。
It's dangerous, so you must not enter.
Used to state a basis for judgment or inference. Often interchangeable with からすると or から見ると, but からして can sound more direct.
この様子からして、彼は成功するだろう。
Judging from how things look, he will probably succeed.
顔色からして、彼女は元気がない。
Based on her complexion, she seems unwell.
から見ると explicitly uses the perspective of seeing, whereas からして is a broader basis for judgment.
Compound of particle から (from, because) + して (te-form of する). The emphatic and judgmental uses developed from the basic 'from' sense.