unidirectional

noun 0.719

bilateral

noun 0.673

back and forth

noun 0.650

two-way street

noun 0.649

two-way communication

noun 0.646

directionality

noun 0.611

bivalent

noun 0.596

backward

noun 0.592

bivariate

noun 0.591

reciprocal

noun 0.579

bipole

noun 0.579

binational

noun 0.577

round trip

noun 0.571

to and fro

noun 0.570

dual

noun 0.568

reversible

noun 0.568

bisexual

noun 0.564

bilateralism

noun 0.562

forward link

noun 0.559

binary

noun 0.556

bipolar

noun 0.554

bistable

noun 0.553

biarticular

noun 0.552

bivalence

noun 0.551

two-way mirror

noun 0.550

reverse link

noun 0.548

bicyclic

noun 0.547

biexponential

noun 0.546

bifold

noun 0.543

biannual

noun 0.539

contraflow

noun 0.539

double bind

noun 0.538

backward pass

noun 0.535

bilevel

noun 0.532

direction

noun 0.530

back channel

noun 0.530

bilateral symmetry

noun 0.529

binomial

noun 0.529

bicorn

noun 0.529

ditransitive

noun 0.528

backflow

noun 0.527

bilingual

noun 0.526

duplex

noun 0.524

binominal

noun 0.523

round turn

noun 0.520

reverse

noun 0.520

reverser

noun 0.520

duality

noun 0.520

switchback

noun 0.518

biennial

noun 0.518

counterflow

noun 0.517

foldback

noun 0.516

right back

noun 0.516

bijection

noun 0.516

double crossover

noun 0.516

biaxiality

noun 0.516

bicultural

noun 0.516

double

noun 0.515

boustrophedon

noun 0.514

antiparallel

noun 0.514

biped

noun 0.513

forward-backward algorithm

noun 0.513

back cross

noun 0.513

outbound

noun 0.512

dyadic

noun 0.511

bistability

noun 0.510

inverse

noun 0.510

ambisexual

noun 0.509

bivoltine

noun 0.509

dialogicality

noun 0.509

bilinguality

noun 0.508

reciprocity

noun 0.507

bispectrum

noun 0.507

retrograde

noun 0.507

biweekly

noun 0.506

bikeway

noun 0.506

side-by-side

noun 0.505

biradical

noun 0.504

bicoastal

noun 0.504

backward linkage

noun 0.503

binary function

noun 0.503

bilingual dictionary

noun 0.503

double meaning

noun 0.503

bigram

noun 0.502

sideway

noun 0.502

forward reasoning

noun 0.501

palindrome

noun 0.501

bicolour

noun 0.501

back

noun 0.500

binary relation

noun 0.500