ようやく => only just N3
Achievements
ようやく => finally; at last N3
Achievements
よもや => surely (not); certainly (not) N1
Emphasize the negative meaning
ようやく => finally; at last N3
Achievements
や、やいなや => As soon as A, B N1
Time, Situation
やなんか => Something like... N3
Vague
いかのように => As below N4
Description
ようではないか/ようじゃないか => Let’s do (something); Why don’t we ~ N2
ようか~まいか => whether or not; considering options N2
~いかんだ / いかんで、~ /  ~いかんによって、~ => It depends ... N1
Related, corresponding
やなにか => the same, equivalent to N4
Demonstrate by example
かのようだ/かのように/かのような => as if; just like ~ N2